急求各种几何体面积和体积的公式，勾股定理 急求数学面积和体积的所有字母计算公式!!!
\u52fe\u80a1\u5b9a\u7406\u6c42\u4e0b\u5217\u56fe\u5f62\u7684\u9762\u79ef\u8fd9\u4e2a\u95ee\u9898\u95ee\u4e86\u4e24\u904d\u554a
\u5982\u56fe\u5ef6\u957fAF\u4ea4CD\u4e8eB,
\u56e0\u4e3a\u2220E=90\uff0c\u2220D=90\uff0c\u2220BFE=90,
\u6240\u4ee5\u2220FBD=360-\u2220E-\u2220D-\u2220BFE=360-270=90
\u6240\u4ee5\u56db\u8fb9\u5f62EFBD\u662f\u77e9\u5f62\u3002
\u6240\u4ee5EF=BD
\u56e0\u4e3aEF=1,
\u6240\u4ee5BD=1
\u56e0\u4e3aCD=6
\u6240\u4ee5BC=CD-BD=6-1=5
\u56e0\u4e3a\u2220ABC=90
\u6240\u4ee5\u25b3ABC\u662f\u76f4\u89d2\u4e09\u89d2\u5f62
\u6839\u636e\u52fe\u80a1\u5b9a\u7406\uff1aAB^2+BC^2=AC^2
\u56e0\u4e3aAC=13,BC=5
\u6240\u4ee5AB^2+5^2=13^2
AB^2=144
AB=12
\u56e0\u4e3aAF=1
\u6240\u4ee5BF=AB-AF=12-1=11
\u6240\u4ee5S\u77e9\u5f62EFBD=BF*DB=11*1=11
S\u25b3ABC=AB*BC/2=12*5/2=30
\u6240\u4ee5\u8fd9\u4e2a\u56fe\u5f62\u7684\u9762\u79ef=S\u77e9\u5f62EFBD+S\u25b3ABC=30+11=41
\u957f\u65b9\u5f62=\u957f*\u5bbd
\u5e73\u884c\u56db\u8fb9\u5f62=\u957f*\u9ad8
\u4e09\u89d2\u5f62=\u957f*\u9ad8/2
\u6b63\u65b9\u5f62=\u8fb9\u957f*\u8fb9\u957f
\u5706=\u5706\u5468\u7387*\u534a\u5f84\u7684\u5e73\u65b9
\u8fd9\u4e9b\u662f\u5c0f\u5b66\u7684,\u6211\u5df2\u7ecf\u6316\u7a7a\u5fc3\u601d\u4e86,
\u6211\u662f\u516d\u5e74\u7ea7\u7684
\u53c8\u627e\u4e86\u4e00\u4e9b:
\u6211\u7ed9\u7684\u786e\u5b9e\u662f\u521d\u4e2d\u7684\u6570\u5b66\u5b9a\u7406\u548c\u516c\u5f0f\u5927\u5168\uff0c\u697c\u4e3b\u770b\u4e0d\u61c2\u95ee\u9898\u4e0d\u5728\u8fd9\u91cc\uff0c\u5efa\u8bae\u697c\u4e3b\u5148\u4ece\u57fa\u7840\u77e5\u8bc6\u6293\u8d77\uff0c\u5149\u8bb0\u516c\u5f0f\u800c\u4e0d\u7406\u89e3\u662f\u4e0d\u884c\u7684\uff0c\u4ecb\u7ecd
\u51e0\u4e2a\u521d\u4e2d\u751f\u5b66\u4e60\u7f51\u7ad9\u521d\u4e2d\u6570\u5b66\u8d44\u6e90\u7f51
http://www.1230.org/
\u521d\u4e2d\u6570\u5b66\u7f51
http://www.czsx.com.cn/
\u521d\u4e2d\u6570\u5b66\u4e50\u56ed
http://www.0618.org/
\u534e\u5e08\u5927\u521d\u4e2d\u6570\u5b66\u7f51\u7ad9
http://www.hsdczsx.com/Article_Index.asp
\u4e2d\u5b66\u6570\u5b66\u9898\u5e93
http://www.tiku.net/
\u8fd9\u662f\u521d\u4e2d\u7684\u4ee3\u6570\u516c\u5f0f\uff1a
http://www.edu3g.com/math/expressions/czds/index1.html
\u521d\u4e2d\u6570\u5b66\u5e38\u7528\u516c\u5f0f\uff1a
http://edu.northeast.cn/system/2006/09/11/050545772.shtml
\u521d\u4e2d\u6570\u5b66\u516c\u5f0f\uff0c\u8fd9\u4e2a\u9700\u8981\u4e0b\u8f7d\uff1a
http://www.hnmaths.com/Soft/czsx/200605/693.html
\u5e38\u7528\u6570\u5b66\u516c\u5f0f\u8868\uff1a
http://www.wen8.net/html/307.htm
http://forum.heftyedu.com/viewthread.php?tid=740
\u53e6\u5916\u5173\u4e8e\u5b66\u4e60\u65b9\u6cd5\u7684\uff1a\uff08\u90a3\u4e2a\u540c\u5b66\u8ddf\u4f60\u7684\u60c5\u51b5\u6709\u70b9\u7c7b\u4f3c\u5427\uff09
http://zhidao.baidu.com/question/18903134.html
\u5e0c\u671b\u5bf9\u4f60\u6709\u5e2e\u52a9\uff0c
1 \u8fc7\u4e24\u70b9\u6709\u4e14\u53ea\u6709\u4e00\u6761\u76f4\u7ebf
2 \u4e24\u70b9\u4e4b\u95f4\u7ebf\u6bb5\u6700\u77ed
3 \u540c\u89d2\u6216\u7b49\u89d2\u7684\u8865\u89d2\u76f8\u7b49
4 \u540c\u89d2\u6216\u7b49\u89d2\u7684\u4f59\u89d2\u76f8\u7b49
5 \u8fc7\u4e00\u70b9\u6709\u4e14\u53ea\u6709\u4e00\u6761\u76f4\u7ebf\u548c\u5df2\u77e5\u76f4\u7ebf\u5782\u76f4
6 \u76f4\u7ebf\u5916\u4e00\u70b9\u4e0e\u76f4\u7ebf\u4e0a\u5404\u70b9\u8fde\u63a5\u7684\u6240\u6709\u7ebf\u6bb5\u4e2d\uff0c\u5782\u7ebf\u6bb5\u6700\u77ed
7 \u5e73\u884c\u516c\u7406 \u7ecf\u8fc7\u76f4\u7ebf\u5916\u4e00\u70b9\uff0c\u6709\u4e14\u53ea\u6709\u4e00\u6761\u76f4\u7ebf\u4e0e\u8fd9\u6761\u76f4\u7ebf\u5e73\u884c
8 \u5982\u679c\u4e24\u6761\u76f4\u7ebf\u90fd\u548c\u7b2c\u4e09\u6761\u76f4\u7ebf\u5e73\u884c\uff0c\u8fd9\u4e24\u6761\u76f4\u7ebf\u4e5f\u4e92\u76f8\u5e73\u884c
9 \u540c\u4f4d\u89d2\u76f8\u7b49\uff0c\u4e24\u76f4\u7ebf\u5e73\u884c
10 \u5185\u9519\u89d2\u76f8\u7b49\uff0c\u4e24\u76f4\u7ebf\u5e73\u884c
11 \u540c\u65c1\u5185\u89d2\u4e92\u8865\uff0c\u4e24\u76f4\u7ebf\u5e73\u884c
12\u4e24\u76f4\u7ebf\u5e73\u884c\uff0c\u540c\u4f4d\u89d2\u76f8\u7b49
13 \u4e24\u76f4\u7ebf\u5e73\u884c\uff0c\u5185\u9519\u89d2\u76f8\u7b49
14 \u4e24\u76f4\u7ebf\u5e73\u884c\uff0c\u540c\u65c1\u5185\u89d2\u4e92\u8865
15 \u5b9a\u7406 \u4e09\u89d2\u5f62\u4e24\u8fb9\u7684\u548c\u5927\u4e8e\u7b2c\u4e09\u8fb9
16 \u63a8\u8bba \u4e09\u89d2\u5f62\u4e24\u8fb9\u7684\u5dee\u5c0f\u4e8e\u7b2c\u4e09\u8fb9
17 \u4e09\u89d2\u5f62\u5185\u89d2\u548c\u5b9a\u7406 \u4e09\u89d2\u5f62\u4e09\u4e2a\u5185\u89d2\u7684\u548c\u7b49\u4e8e180\u00b0
18 \u63a8\u8bba1 \u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u4e24\u4e2a\u9510\u89d2\u4e92\u4f59
19 \u63a8\u8bba2 \u4e09\u89d2\u5f62\u7684\u4e00\u4e2a\u5916\u89d2\u7b49\u4e8e\u548c\u5b83\u4e0d\u76f8\u90bb\u7684\u4e24\u4e2a\u5185\u89d2\u7684\u548c
20 \u63a8\u8bba3 \u4e09\u89d2\u5f62\u7684\u4e00\u4e2a\u5916\u89d2\u5927\u4e8e\u4efb\u4f55\u4e00\u4e2a\u548c\u5b83\u4e0d\u76f8\u90bb\u7684\u5185\u89d2
21 \u5168\u7b49\u4e09\u89d2\u5f62\u7684\u5bf9\u5e94\u8fb9\u3001\u5bf9\u5e94\u89d2\u76f8\u7b49
22\u8fb9\u89d2\u8fb9\u516c\u7406(SAS) \u6709\u4e24\u8fb9\u548c\u5b83\u4eec\u7684\u5939\u89d2\u5bf9\u5e94\u76f8\u7b49\u7684\u4e24\u4e2a\u4e09\u89d2\u5f62\u5168\u7b49
23 \u89d2\u8fb9\u89d2\u516c\u7406( ASA)\u6709\u4e24\u89d2\u548c\u5b83\u4eec\u7684\u5939\u8fb9\u5bf9\u5e94\u76f8\u7b49\u7684\u4e24\u4e2a\u4e09\u89d2\u5f62\u5168\u7b49
24 \u63a8\u8bba(AAS) \u6709\u4e24\u89d2\u548c\u5176\u4e2d\u4e00\u89d2\u7684\u5bf9\u8fb9\u5bf9\u5e94\u76f8\u7b49\u7684\u4e24\u4e2a\u4e09\u89d2\u5f62\u5168\u7b49
25 \u8fb9\u8fb9\u8fb9\u516c\u7406(SSS) \u6709\u4e09\u8fb9\u5bf9\u5e94\u76f8\u7b49\u7684\u4e24\u4e2a\u4e09\u89d2\u5f62\u5168\u7b49
26 \u659c\u8fb9\u3001\u76f4\u89d2\u8fb9\u516c\u7406(HL) \u6709\u659c\u8fb9\u548c\u4e00\u6761\u76f4\u89d2\u8fb9\u5bf9\u5e94\u76f8\u7b49\u7684\u4e24\u4e2a\u76f4\u89d2\u4e09\u89d2\u5f62\u5168\u7b49
27 \u5b9a\u74061 \u5728\u89d2\u7684\u5e73\u5206\u7ebf\u4e0a\u7684\u70b9\u5230\u8fd9\u4e2a\u89d2\u7684\u4e24\u8fb9\u7684\u8ddd\u79bb\u76f8\u7b49
28 \u5b9a\u74062 \u5230\u4e00\u4e2a\u89d2\u7684\u4e24\u8fb9\u7684\u8ddd\u79bb\u76f8\u540c\u7684\u70b9\uff0c\u5728\u8fd9\u4e2a\u89d2\u7684\u5e73\u5206\u7ebf\u4e0a
29 \u89d2\u7684\u5e73\u5206\u7ebf\u662f\u5230\u89d2\u7684\u4e24\u8fb9\u8ddd\u79bb\u76f8\u7b49\u7684\u6240\u6709\u70b9\u7684\u96c6\u5408
30 \u7b49\u8170\u4e09\u89d2\u5f62\u7684\u6027\u8d28\u5b9a\u7406 \u7b49\u8170\u4e09\u89d2\u5f62\u7684\u4e24\u4e2a\u5e95\u89d2\u76f8\u7b49 (\u5373\u7b49\u8fb9\u5bf9\u7b49\u89d2\uff09
31 \u63a8\u8bba1 \u7b49\u8170\u4e09\u89d2\u5f62\u9876\u89d2\u7684\u5e73\u5206\u7ebf\u5e73\u5206\u5e95\u8fb9\u5e76\u4e14\u5782\u76f4\u4e8e\u5e95\u8fb9
32 \u7b49\u8170\u4e09\u89d2\u5f62\u7684\u9876\u89d2\u5e73\u5206\u7ebf\u3001\u5e95\u8fb9\u4e0a\u7684\u4e2d\u7ebf\u548c\u5e95\u8fb9\u4e0a\u7684\u9ad8\u4e92\u76f8\u91cd\u5408
33 \u63a8\u8bba3 \u7b49\u8fb9\u4e09\u89d2\u5f62\u7684\u5404\u89d2\u90fd\u76f8\u7b49\uff0c\u5e76\u4e14\u6bcf\u4e00\u4e2a\u89d2\u90fd\u7b49\u4e8e60\u00b0
34 \u7b49\u8170\u4e09\u89d2\u5f62\u7684\u5224\u5b9a\u5b9a\u7406 \u5982\u679c\u4e00\u4e2a\u4e09\u89d2\u5f62\u6709\u4e24\u4e2a\u89d2\u76f8\u7b49\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u89d2\u6240\u5bf9\u7684\u8fb9\u4e5f\u76f8\u7b49\uff08\u7b49\u89d2\u5bf9\u7b49\u8fb9\uff09
35 \u63a8\u8bba1 \u4e09\u4e2a\u89d2\u90fd\u76f8\u7b49\u7684\u4e09\u89d2\u5f62\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62
36 \u63a8\u8bba 2 \u6709\u4e00\u4e2a\u89d2\u7b49\u4e8e60\u00b0\u7684\u7b49\u8170\u4e09\u89d2\u5f62\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62
37 \u5728\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\uff0c\u5982\u679c\u4e00\u4e2a\u9510\u89d2\u7b49\u4e8e30\u00b0\u90a3\u4e48\u5b83\u6240\u5bf9\u7684\u76f4\u89d2\u8fb9\u7b49\u4e8e\u659c\u8fb9\u7684\u4e00\u534a
38 \u76f4\u89d2\u4e09\u89d2\u5f62\u659c\u8fb9\u4e0a\u7684\u4e2d\u7ebf\u7b49\u4e8e\u659c\u8fb9\u4e0a\u7684\u4e00\u534a
39 \u5b9a\u7406 \u7ebf\u6bb5\u5782\u76f4\u5e73\u5206\u7ebf\u4e0a\u7684\u70b9\u548c\u8fd9\u6761\u7ebf\u6bb5\u4e24\u4e2a\u7aef\u70b9\u7684\u8ddd\u79bb\u76f8\u7b49
40 \u9006\u5b9a\u7406 \u548c\u4e00\u6761\u7ebf\u6bb5\u4e24\u4e2a\u7aef\u70b9\u8ddd\u79bb\u76f8\u7b49\u7684\u70b9\uff0c\u5728\u8fd9\u6761\u7ebf\u6bb5\u7684\u5782\u76f4\u5e73\u5206\u7ebf\u4e0a
41 \u7ebf\u6bb5\u7684\u5782\u76f4\u5e73\u5206\u7ebf\u53ef\u770b\u4f5c\u548c\u7ebf\u6bb5\u4e24\u7aef\u70b9\u8ddd\u79bb\u76f8\u7b49\u7684\u6240\u6709\u70b9\u7684\u96c6\u5408
42 \u5b9a\u74061 \u5173\u4e8e\u67d0\u6761\u76f4\u7ebf\u5bf9\u79f0\u7684\u4e24\u4e2a\u56fe\u5f62\u662f\u5168\u7b49\u5f62
43 \u5b9a\u7406 2 \u5982\u679c\u4e24\u4e2a\u56fe\u5f62\u5173\u4e8e\u67d0\u76f4\u7ebf\u5bf9\u79f0\uff0c\u90a3\u4e48\u5bf9\u79f0\u8f74\u662f\u5bf9\u5e94\u70b9\u8fde\u7ebf\u7684\u5782\u76f4\u5e73\u5206\u7ebf
44\u5b9a\u74063 \u4e24\u4e2a\u56fe\u5f62\u5173\u4e8e\u67d0\u76f4\u7ebf\u5bf9\u79f0\uff0c\u5982\u679c\u5b83\u4eec\u7684\u5bf9\u5e94\u7ebf\u6bb5\u6216\u5ef6\u957f\u7ebf\u76f8\u4ea4\uff0c\u90a3\u4e48\u4ea4\u70b9\u5728\u5bf9\u79f0\u8f74\u4e0a
45\u9006\u5b9a\u7406 \u5982\u679c\u4e24\u4e2a\u56fe\u5f62\u7684\u5bf9\u5e94\u70b9\u8fde\u7ebf\u88ab\u540c\u4e00\u6761\u76f4\u7ebf\u5782\u76f4\u5e73\u5206\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u56fe\u5f62\u5173\u4e8e\u8fd9\u6761\u76f4\u7ebf\u5bf9\u79f0
46\u52fe\u80a1\u5b9a\u7406 \u76f4\u89d2\u4e09\u89d2\u5f62\u4e24\u76f4\u89d2\u8fb9a\u3001b\u7684\u5e73\u65b9\u548c\u3001\u7b49\u4e8e\u659c\u8fb9c\u7684\u5e73\u65b9\uff0c\u5373a^2+b^2=c^2
47\u52fe\u80a1\u5b9a\u7406\u7684\u9006\u5b9a\u7406 \u5982\u679c\u4e09\u89d2\u5f62\u7684\u4e09\u8fb9\u957fa\u3001b\u3001c\u6709\u5173\u7cfba^2+b^2=c^2 \uff0c\u90a3\u4e48\u8fd9\u4e2a\u4e09\u89d2\u5f62\u662f\u76f4\u89d2\u4e09\u89d2\u5f62
48\u5b9a\u7406 \u56db\u8fb9\u5f62\u7684\u5185\u89d2\u548c\u7b49\u4e8e360\u00b0
49\u56db\u8fb9\u5f62\u7684\u5916\u89d2\u548c\u7b49\u4e8e360\u00b0
50\u591a\u8fb9\u5f62\u5185\u89d2\u548c\u5b9a\u7406 n\u8fb9\u5f62\u7684\u5185\u89d2\u7684\u548c\u7b49\u4e8e\uff08n-2\uff09\u00d7180\u00b0
51\u63a8\u8bba \u4efb\u610f\u591a\u8fb9\u7684\u5916\u89d2\u548c\u7b49\u4e8e360\u00b0
52\u5e73\u884c\u56db\u8fb9\u5f62\u6027\u8d28\u5b9a\u74061 \u5e73\u884c\u56db\u8fb9\u5f62\u7684\u5bf9\u89d2\u76f8\u7b49
53\u5e73\u884c\u56db\u8fb9\u5f62\u6027\u8d28\u5b9a\u74062 \u5e73\u884c\u56db\u8fb9\u5f62\u7684\u5bf9\u8fb9\u76f8\u7b49
54\u63a8\u8bba \u5939\u5728\u4e24\u6761\u5e73\u884c\u7ebf\u95f4\u7684\u5e73\u884c\u7ebf\u6bb5\u76f8\u7b49
55\u5e73\u884c\u56db\u8fb9\u5f62\u6027\u8d28\u5b9a\u74063 \u5e73\u884c\u56db\u8fb9\u5f62\u7684\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5e73\u5206
56\u5e73\u884c\u56db\u8fb9\u5f62\u5224\u5b9a\u5b9a\u74061 \u4e24\u7ec4\u5bf9\u89d2\u5206\u522b\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62
57\u5e73\u884c\u56db\u8fb9\u5f62\u5224\u5b9a\u5b9a\u74062 \u4e24\u7ec4\u5bf9\u8fb9\u5206\u522b\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62
58\u5e73\u884c\u56db\u8fb9\u5f62\u5224\u5b9a\u5b9a\u74063 \u5bf9\u89d2\u7ebf\u4e92\u76f8\u5e73\u5206\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62
59\u5e73\u884c\u56db\u8fb9\u5f62\u5224\u5b9a\u5b9a\u74064 \u4e00\u7ec4\u5bf9\u8fb9\u5e73\u884c\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u5e73\u884c\u56db\u8fb9\u5f62
60\u77e9\u5f62\u6027\u8d28\u5b9a\u74061 \u77e9\u5f62\u7684\u56db\u4e2a\u89d2\u90fd\u662f\u76f4\u89d2
61\u77e9\u5f62\u6027\u8d28\u5b9a\u74062 \u77e9\u5f62\u7684\u5bf9\u89d2\u7ebf\u76f8\u7b49
62\u77e9\u5f62\u5224\u5b9a\u5b9a\u74061 \u6709\u4e09\u4e2a\u89d2\u662f\u76f4\u89d2\u7684\u56db\u8fb9\u5f62\u662f\u77e9\u5f62
63\u77e9\u5f62\u5224\u5b9a\u5b9a\u74062 \u5bf9\u89d2\u7ebf\u76f8\u7b49\u7684\u5e73\u884c\u56db\u8fb9\u5f62\u662f\u77e9\u5f62
64\u83f1\u5f62\u6027\u8d28\u5b9a\u74061 \u83f1\u5f62\u7684\u56db\u6761\u8fb9\u90fd\u76f8\u7b49
65\u83f1\u5f62\u6027\u8d28\u5b9a\u74062 \u83f1\u5f62\u7684\u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\uff0c\u5e76\u4e14\u6bcf\u4e00\u6761\u5bf9\u89d2\u7ebf\u5e73\u5206\u4e00\u7ec4\u5bf9\u89d2
66\u83f1\u5f62\u9762\u79ef=\u5bf9\u89d2\u7ebf\u4e58\u79ef\u7684\u4e00\u534a\uff0c\u5373S=\uff08a\u00d7b\uff09\u00f72
67\u83f1\u5f62\u5224\u5b9a\u5b9a\u74061 \u56db\u8fb9\u90fd\u76f8\u7b49\u7684\u56db\u8fb9\u5f62\u662f\u83f1\u5f62
68\u83f1\u5f62\u5224\u5b9a\u5b9a\u74062 \u5bf9\u89d2\u7ebf\u4e92\u76f8\u5782\u76f4\u7684\u5e73\u884c\u56db\u8fb9\u5f62\u662f\u83f1\u5f62
69\u6b63\u65b9\u5f62\u6027\u8d28\u5b9a\u74061 \u6b63\u65b9\u5f62\u7684\u56db\u4e2a\u89d2\u90fd\u662f\u76f4\u89d2\uff0c\u56db\u6761\u8fb9\u90fd\u76f8\u7b49
70\u6b63\u65b9\u5f62\u6027\u8d28\u5b9a\u74062\u6b63\u65b9\u5f62\u7684\u4e24\u6761\u5bf9\u89d2\u7ebf\u76f8\u7b49\uff0c\u5e76\u4e14\u4e92\u76f8\u5782\u76f4\u5e73\u5206\uff0c\u6bcf\u6761\u5bf9\u89d2\u7ebf\u5e73\u5206\u4e00\u7ec4\u5bf9\u89d2
71\u5b9a\u74061 \u5173\u4e8e\u4e2d\u5fc3\u5bf9\u79f0\u7684\u4e24\u4e2a\u56fe\u5f62\u662f\u5168\u7b49\u7684
72\u5b9a\u74062 \u5173\u4e8e\u4e2d\u5fc3\u5bf9\u79f0\u7684\u4e24\u4e2a\u56fe\u5f62\uff0c\u5bf9\u79f0\u70b9\u8fde\u7ebf\u90fd\u7ecf\u8fc7\u5bf9\u79f0\u4e2d\u5fc3\uff0c\u5e76\u4e14\u88ab\u5bf9\u79f0\u4e2d\u5fc3\u5e73\u5206
73\u9006\u5b9a\u7406 \u5982\u679c\u4e24\u4e2a\u56fe\u5f62\u7684\u5bf9\u5e94\u70b9\u8fde\u7ebf\u90fd\u7ecf\u8fc7\u67d0\u4e00\u70b9\uff0c\u5e76\u4e14\u88ab\u8fd9\u4e00
\u70b9\u5e73\u5206\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u56fe\u5f62\u5173\u4e8e\u8fd9\u4e00\u70b9\u5bf9\u79f0
74\u7b49\u8170\u68af\u5f62\u6027\u8d28\u5b9a\u7406 \u7b49\u8170\u68af\u5f62\u5728\u540c\u4e00\u5e95\u4e0a\u7684\u4e24\u4e2a\u89d2\u76f8\u7b49
75\u7b49\u8170\u68af\u5f62\u7684\u4e24\u6761\u5bf9\u89d2\u7ebf\u76f8\u7b49
76\u7b49\u8170\u68af\u5f62\u5224\u5b9a\u5b9a\u7406 \u5728\u540c\u4e00\u5e95\u4e0a\u7684\u4e24\u4e2a\u89d2\u76f8\u7b49\u7684\u68af\u5f62\u662f\u7b49\u8170\u68af\u5f62
77\u5bf9\u89d2\u7ebf\u76f8\u7b49\u7684\u68af\u5f62\u662f\u7b49\u8170\u68af\u5f62
78\u5e73\u884c\u7ebf\u7b49\u5206\u7ebf\u6bb5\u5b9a\u7406 \u5982\u679c\u4e00\u7ec4\u5e73\u884c\u7ebf\u5728\u4e00\u6761\u76f4\u7ebf\u4e0a\u622a\u5f97\u7684\u7ebf\u6bb5
\u76f8\u7b49\uff0c\u90a3\u4e48\u5728\u5176\u4ed6\u76f4\u7ebf\u4e0a\u622a\u5f97\u7684\u7ebf\u6bb5\u4e5f\u76f8\u7b49
79 \u63a8\u8bba1 \u7ecf\u8fc7\u68af\u5f62\u4e00\u8170\u7684\u4e2d\u70b9\u4e0e\u5e95\u5e73\u884c\u7684\u76f4\u7ebf\uff0c\u5fc5\u5e73\u5206\u53e6\u4e00\u8170
80 \u63a8\u8bba2 \u7ecf\u8fc7\u4e09\u89d2\u5f62\u4e00\u8fb9\u7684\u4e2d\u70b9\u4e0e\u53e6\u4e00\u8fb9\u5e73\u884c\u7684\u76f4\u7ebf\uff0c\u5fc5\u5e73\u5206\u7b2c
\u4e09\u8fb9
81 \u4e09\u89d2\u5f62\u4e2d\u4f4d\u7ebf\u5b9a\u7406 \u4e09\u89d2\u5f62\u7684\u4e2d\u4f4d\u7ebf\u5e73\u884c\u4e8e\u7b2c\u4e09\u8fb9\uff0c\u5e76\u4e14\u7b49\u4e8e\u5b83
\u7684\u4e00\u534a
82 \u68af\u5f62\u4e2d\u4f4d\u7ebf\u5b9a\u7406 \u68af\u5f62\u7684\u4e2d\u4f4d\u7ebf\u5e73\u884c\u4e8e\u4e24\u5e95\uff0c\u5e76\u4e14\u7b49\u4e8e\u4e24\u5e95\u548c\u7684
\u4e00\u534a L=\uff08a+b\uff09\u00f72 S=L\u00d7h
83 (1)\u6bd4\u4f8b\u7684\u57fa\u672c\u6027\u8d28 \u5982\u679ca:b=c:d,\u90a3\u4e48ad=bc
\u5982\u679cad=bc,\u90a3\u4e48a:b=c:d
84 (2)\u5408\u6bd4\u6027\u8d28 \u5982\u679ca\uff0fb=c\uff0fd,\u90a3\u4e48(a\u00b1b)\uff0fb=(c\u00b1d)\uff0fd
85 (3)\u7b49\u6bd4\u6027\u8d28 \u5982\u679ca\uff0fb=c\uff0fd=\u2026=m\uff0fn(b+d+\u2026+n\u22600),\u90a3\u4e48
(a+c+\u2026+m)\uff0f(b+d+\u2026+n)=a\uff0fb
86 \u5e73\u884c\u7ebf\u5206\u7ebf\u6bb5\u6210\u6bd4\u4f8b\u5b9a\u7406 \u4e09\u6761\u5e73\u884c\u7ebf\u622a\u4e24\u6761\u76f4\u7ebf\uff0c\u6240\u5f97\u7684\u5bf9\u5e94
\u7ebf\u6bb5\u6210\u6bd4\u4f8b
87 \u63a8\u8bba \u5e73\u884c\u4e8e\u4e09\u89d2\u5f62\u4e00\u8fb9\u7684\u76f4\u7ebf\u622a\u5176\u4ed6\u4e24\u8fb9\uff08\u6216\u4e24\u8fb9\u7684\u5ef6\u957f\u7ebf\uff09\uff0c\u6240\u5f97\u7684\u5bf9\u5e94\u7ebf\u6bb5\u6210\u6bd4\u4f8b
88 \u5b9a\u7406 \u5982\u679c\u4e00\u6761\u76f4\u7ebf\u622a\u4e09\u89d2\u5f62\u7684\u4e24\u8fb9\uff08\u6216\u4e24\u8fb9\u7684\u5ef6\u957f\u7ebf\uff09\u6240\u5f97\u7684\u5bf9\u5e94\u7ebf\u6bb5\u6210\u6bd4\u4f8b\uff0c\u90a3\u4e48\u8fd9\u6761\u76f4\u7ebf\u5e73\u884c\u4e8e\u4e09\u89d2\u5f62\u7684\u7b2c\u4e09\u8fb9
89 \u5e73\u884c\u4e8e\u4e09\u89d2\u5f62\u7684\u4e00\u8fb9\uff0c\u5e76\u4e14\u548c\u5176\u4ed6\u4e24\u8fb9\u76f8\u4ea4\u7684\u76f4\u7ebf\uff0c\u6240\u622a\u5f97\u7684\u4e09\u89d2\u5f62\u7684\u4e09\u8fb9\u4e0e\u539f\u4e09\u89d2\u5f62\u4e09\u8fb9\u5bf9\u5e94\u6210\u6bd4\u4f8b
90 \u5b9a\u7406 \u5e73\u884c\u4e8e\u4e09\u89d2\u5f62\u4e00\u8fb9\u7684\u76f4\u7ebf\u548c\u5176\u4ed6\u4e24\u8fb9\uff08\u6216\u4e24\u8fb9\u7684\u5ef6\u957f\u7ebf\uff09\u76f8\u4ea4\uff0c\u6240\u6784\u6210\u7684\u4e09\u89d2\u5f62\u4e0e\u539f\u4e09\u89d2\u5f62\u76f8\u4f3c
91 \u76f8\u4f3c\u4e09\u89d2\u5f62\u5224\u5b9a\u5b9a\u74061 \u4e24\u89d2\u5bf9\u5e94\u76f8\u7b49\uff0c\u4e24\u4e09\u89d2\u5f62\u76f8\u4f3c\uff08ASA\uff09
92 \u76f4\u89d2\u4e09\u89d2\u5f62\u88ab\u659c\u8fb9\u4e0a\u7684\u9ad8\u5206\u6210\u7684\u4e24\u4e2a\u76f4\u89d2\u4e09\u89d2\u5f62\u548c\u539f\u4e09\u89d2\u5f62\u76f8\u4f3c
93 \u5224\u5b9a\u5b9a\u74062 \u4e24\u8fb9\u5bf9\u5e94\u6210\u6bd4\u4f8b\u4e14\u5939\u89d2\u76f8\u7b49\uff0c\u4e24\u4e09\u89d2\u5f62\u76f8\u4f3c\uff08SAS\uff09
94 \u5224\u5b9a\u5b9a\u74063 \u4e09\u8fb9\u5bf9\u5e94\u6210\u6bd4\u4f8b\uff0c\u4e24\u4e09\u89d2\u5f62\u76f8\u4f3c\uff08SSS\uff09
95 \u5b9a\u7406 \u5982\u679c\u4e00\u4e2a\u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u659c\u8fb9\u548c\u4e00\u6761\u76f4\u89d2\u8fb9\u4e0e\u53e6\u4e00\u4e2a\u76f4\u89d2\u4e09
\u89d2\u5f62\u7684\u659c\u8fb9\u548c\u4e00\u6761\u76f4\u89d2\u8fb9\u5bf9\u5e94\u6210\u6bd4\u4f8b\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u76f4\u89d2\u4e09\u89d2\u5f62\u76f8\u4f3c
96 \u6027\u8d28\u5b9a\u74061 \u76f8\u4f3c\u4e09\u89d2\u5f62\u5bf9\u5e94\u9ad8\u7684\u6bd4\uff0c\u5bf9\u5e94\u4e2d\u7ebf\u7684\u6bd4\u4e0e\u5bf9\u5e94\u89d2\u5e73
\u5206\u7ebf\u7684\u6bd4\u90fd\u7b49\u4e8e\u76f8\u4f3c\u6bd4
97 \u6027\u8d28\u5b9a\u74062 \u76f8\u4f3c\u4e09\u89d2\u5f62\u5468\u957f\u7684\u6bd4\u7b49\u4e8e\u76f8\u4f3c\u6bd4
98 \u6027\u8d28\u5b9a\u74063 \u76f8\u4f3c\u4e09\u89d2\u5f62\u9762\u79ef\u7684\u6bd4\u7b49\u4e8e\u76f8\u4f3c\u6bd4\u7684\u5e73\u65b9
99 \u4efb\u610f\u9510\u89d2\u7684\u6b63\u5f26\u503c\u7b49\u4e8e\u5b83\u7684\u4f59\u89d2\u7684\u4f59\u5f26\u503c\uff0c\u4efb\u610f\u9510\u89d2\u7684\u4f59\u5f26\u503c\u7b49
\u4e8e\u5b83\u7684\u4f59\u89d2\u7684\u6b63\u5f26\u503c
100\u4efb\u610f\u9510\u89d2\u7684\u6b63\u5207\u503c\u7b49\u4e8e\u5b83\u7684\u4f59\u89d2\u7684\u4f59\u5207\u503c\uff0c\u4efb\u610f\u9510\u89d2\u7684\u4f59\u5207\u503c\u7b49
\u4e8e\u5b83\u7684\u4f59\u89d2\u7684\u6b63\u5207\u503c
101\u5706\u662f\u5b9a\u70b9\u7684\u8ddd\u79bb\u7b49\u4e8e\u5b9a\u957f\u7684\u70b9\u7684\u96c6\u5408
102\u5706\u7684\u5185\u90e8\u53ef\u4ee5\u770b\u4f5c\u662f\u5706\u5fc3\u7684\u8ddd\u79bb\u5c0f\u4e8e\u534a\u5f84\u7684\u70b9\u7684\u96c6\u5408
103\u5706\u7684\u5916\u90e8\u53ef\u4ee5\u770b\u4f5c\u662f\u5706\u5fc3\u7684\u8ddd\u79bb\u5927\u4e8e\u534a\u5f84\u7684\u70b9\u7684\u96c6\u5408
104\u540c\u5706\u6216\u7b49\u5706\u7684\u534a\u5f84\u76f8\u7b49
105\u5230\u5b9a\u70b9\u7684\u8ddd\u79bb\u7b49\u4e8e\u5b9a\u957f\u7684\u70b9\u7684\u8f68\u8ff9\uff0c\u662f\u4ee5\u5b9a\u70b9\u4e3a\u5706\u5fc3\uff0c\u5b9a\u957f\u4e3a\u534a
\u5f84\u7684\u5706
106\u548c\u5df2\u77e5\u7ebf\u6bb5\u4e24\u4e2a\u7aef\u70b9\u7684\u8ddd\u79bb\u76f8\u7b49\u7684\u70b9\u7684\u8f68\u8ff9\uff0c\u662f\u7740\u6761\u7ebf\u6bb5\u7684\u5782\u76f4
\u5e73\u5206\u7ebf
107\u5230\u5df2\u77e5\u89d2\u7684\u4e24\u8fb9\u8ddd\u79bb\u76f8\u7b49\u7684\u70b9\u7684\u8f68\u8ff9\uff0c\u662f\u8fd9\u4e2a\u89d2\u7684\u5e73\u5206\u7ebf
108\u5230\u4e24\u6761\u5e73\u884c\u7ebf\u8ddd\u79bb\u76f8\u7b49\u7684\u70b9\u7684\u8f68\u8ff9\uff0c\u662f\u548c\u8fd9\u4e24\u6761\u5e73\u884c\u7ebf\u5e73\u884c\u4e14\u8ddd
\u79bb\u76f8\u7b49\u7684\u4e00\u6761\u76f4\u7ebf
109\u5b9a\u7406 \u4e0d\u5728\u540c\u4e00\u76f4\u7ebf\u4e0a\u7684\u4e09\u70b9\u786e\u5b9a\u4e00\u4e2a\u5706\u3002
110\u5782\u5f84\u5b9a\u7406 \u5782\u76f4\u4e8e\u5f26\u7684\u76f4\u5f84\u5e73\u5206\u8fd9\u6761\u5f26\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u7684\u4e24\u6761\u5f27
111\u63a8\u8bba1 \u2460\u5e73\u5206\u5f26\uff08\u4e0d\u662f\u76f4\u5f84\uff09\u7684\u76f4\u5f84\u5782\u76f4\u4e8e\u5f26\uff0c\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u7684\u4e24\u6761\u5f27
\u2461\u5f26\u7684\u5782\u76f4\u5e73\u5206\u7ebf\u7ecf\u8fc7\u5706\u5fc3\uff0c\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u7684\u4e24\u6761\u5f27
\u2462\u5e73\u5206\u5f26\u6240\u5bf9\u7684\u4e00\u6761\u5f27\u7684\u76f4\u5f84\uff0c\u5782\u76f4\u5e73\u5206\u5f26\uff0c\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u7684\u53e6\u4e00\u6761\u5f27
112\u63a8\u8bba2 \u5706\u7684\u4e24\u6761\u5e73\u884c\u5f26\u6240\u5939\u7684\u5f27\u76f8\u7b49
113\u5706\u662f\u4ee5\u5706\u5fc3\u4e3a\u5bf9\u79f0\u4e2d\u5fc3\u7684\u4e2d\u5fc3\u5bf9\u79f0\u56fe\u5f62
114\u5b9a\u7406 \u5728\u540c\u5706\u6216\u7b49\u5706\u4e2d\uff0c\u76f8\u7b49\u7684\u5706\u5fc3\u89d2\u6240\u5bf9\u7684\u5f27\u76f8\u7b49\uff0c\u6240\u5bf9\u7684\u5f26
\u76f8\u7b49\uff0c\u6240\u5bf9\u7684\u5f26\u7684\u5f26\u5fc3\u8ddd\u76f8\u7b49
115\u63a8\u8bba \u5728\u540c\u5706\u6216\u7b49\u5706\u4e2d\uff0c\u5982\u679c\u4e24\u4e2a\u5706\u5fc3\u89d2\u3001\u4e24\u6761\u5f27\u3001\u4e24\u6761\u5f26\u6216\u4e24
\u5f26\u7684\u5f26\u5fc3\u8ddd\u4e2d\u6709\u4e00\u7ec4\u91cf\u76f8\u7b49\u90a3\u4e48\u5b83\u4eec\u6240\u5bf9\u5e94\u7684\u5176\u4f59\u5404\u7ec4\u91cf\u90fd\u76f8\u7b49
116\u5b9a\u7406 \u4e00\u6761\u5f27\u6240\u5bf9\u7684\u5706\u5468\u89d2\u7b49\u4e8e\u5b83\u6240\u5bf9\u7684\u5706\u5fc3\u89d2\u7684\u4e00\u534a
117\u63a8\u8bba1 \u540c\u5f27\u6216\u7b49\u5f27\u6240\u5bf9\u7684\u5706\u5468\u89d2\u76f8\u7b49\uff1b\u540c\u5706\u6216\u7b49\u5706\u4e2d\uff0c\u76f8\u7b49\u7684\u5706\u5468\u89d2\u6240\u5bf9\u7684\u5f27\u4e5f\u76f8\u7b49
118\u63a8\u8bba2 \u534a\u5706\uff08\u6216\u76f4\u5f84\uff09\u6240\u5bf9\u7684\u5706\u5468\u89d2\u662f\u76f4\u89d2\uff1b90\u00b0\u7684\u5706\u5468\u89d2\u6240
\u5bf9\u7684\u5f26\u662f\u76f4\u5f84
119\u63a8\u8bba3 \u5982\u679c\u4e09\u89d2\u5f62\u4e00\u8fb9\u4e0a\u7684\u4e2d\u7ebf\u7b49\u4e8e\u8fd9\u8fb9\u7684\u4e00\u534a\uff0c\u90a3\u4e48\u8fd9\u4e2a\u4e09\u89d2\u5f62\u662f\u76f4\u89d2\u4e09\u89d2\u5f62
120\u5b9a\u7406 \u5706\u7684\u5185\u63a5\u56db\u8fb9\u5f62\u7684\u5bf9\u89d2\u4e92\u8865\uff0c\u5e76\u4e14\u4efb\u4f55\u4e00\u4e2a\u5916\u89d2\u90fd\u7b49\u4e8e\u5b83
\u7684\u5185\u5bf9\u89d2
121\u2460\u76f4\u7ebfL\u548c\u2299O\u76f8\u4ea4 d\uff1cr
\u2461\u76f4\u7ebfL\u548c\u2299O\u76f8\u5207 d=r
\u2462\u76f4\u7ebfL\u548c\u2299O\u76f8\u79bb d\uff1er
122\u5207\u7ebf\u7684\u5224\u5b9a\u5b9a\u7406 \u7ecf\u8fc7\u534a\u5f84\u7684\u5916\u7aef\u5e76\u4e14\u5782\u76f4\u4e8e\u8fd9\u6761\u534a\u5f84\u7684\u76f4\u7ebf\u662f\u5706\u7684\u5207\u7ebf
123\u5207\u7ebf\u7684\u6027\u8d28\u5b9a\u7406 \u5706\u7684\u5207\u7ebf\u5782\u76f4\u4e8e\u7ecf\u8fc7\u5207\u70b9\u7684\u534a\u5f84
124\u63a8\u8bba1 \u7ecf\u8fc7\u5706\u5fc3\u4e14\u5782\u76f4\u4e8e\u5207\u7ebf\u7684\u76f4\u7ebf\u5fc5\u7ecf\u8fc7\u5207\u70b9
125\u63a8\u8bba2 \u7ecf\u8fc7\u5207\u70b9\u4e14\u5782\u76f4\u4e8e\u5207\u7ebf\u7684\u76f4\u7ebf\u5fc5\u7ecf\u8fc7\u5706\u5fc3
126\u5207\u7ebf\u957f\u5b9a\u7406 \u4ece\u5706\u5916\u4e00\u70b9\u5f15\u5706\u7684\u4e24\u6761\u5207\u7ebf\uff0c\u5b83\u4eec\u7684\u5207\u7ebf\u957f\u76f8\u7b49\uff0c
\u5706\u5fc3\u548c\u8fd9\u4e00\u70b9\u7684\u8fde\u7ebf\u5e73\u5206\u4e24\u6761\u5207\u7ebf\u7684\u5939\u89d2
127\u5706\u7684\u5916\u5207\u56db\u8fb9\u5f62\u7684\u4e24\u7ec4\u5bf9\u8fb9\u7684\u548c\u76f8\u7b49
128\u5f26\u5207\u89d2\u5b9a\u7406 \u5f26\u5207\u89d2\u7b49\u4e8e\u5b83\u6240\u5939\u7684\u5f27\u5bf9\u7684\u5706\u5468\u89d2
129\u63a8\u8bba \u5982\u679c\u4e24\u4e2a\u5f26\u5207\u89d2\u6240\u5939\u7684\u5f27\u76f8\u7b49\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u5f26\u5207\u89d2\u4e5f\u76f8\u7b49
130\u76f8\u4ea4\u5f26\u5b9a\u7406 \u5706\u5185\u7684\u4e24\u6761\u76f8\u4ea4\u5f26\uff0c\u88ab\u4ea4\u70b9\u5206\u6210\u7684\u4e24\u6761\u7ebf\u6bb5\u957f\u7684\u79ef
\u76f8\u7b49
131\u63a8\u8bba \u5982\u679c\u5f26\u4e0e\u76f4\u5f84\u5782\u76f4\u76f8\u4ea4\uff0c\u90a3\u4e48\u5f26\u7684\u4e00\u534a\u662f\u5b83\u5206\u76f4\u5f84\u6240\u6210\u7684
\u4e24\u6761\u7ebf\u6bb5\u7684\u6bd4\u4f8b\u4e2d\u9879
132\u5207\u5272\u7ebf\u5b9a\u7406 \u4ece\u5706\u5916\u4e00\u70b9\u5f15\u5706\u7684\u5207\u7ebf\u548c\u5272\u7ebf\uff0c\u5207\u7ebf\u957f\u662f\u8fd9\u70b9\u5230\u5272
\u7ebf\u4e0e\u5706\u4ea4\u70b9\u7684\u4e24\u6761\u7ebf\u6bb5\u957f\u7684\u6bd4\u4f8b\u4e2d\u9879
133\u63a8\u8bba \u4ece\u5706\u5916\u4e00\u70b9\u5f15\u5706\u7684\u4e24\u6761\u5272\u7ebf\uff0c\u8fd9\u4e00\u70b9\u5230\u6bcf\u6761\u5272\u7ebf\u4e0e\u5706\u7684\u4ea4\u70b9\u7684\u4e24\u6761\u7ebf\u6bb5\u957f\u7684\u79ef\u76f8\u7b49
134\u5982\u679c\u4e24\u4e2a\u5706\u76f8\u5207\uff0c\u90a3\u4e48\u5207\u70b9\u4e00\u5b9a\u5728\u8fde\u5fc3\u7ebf\u4e0a
135\u2460\u4e24\u5706\u5916\u79bb d\uff1eR+r \u2461\u4e24\u5706\u5916\u5207 d=R+r
\u2462\u4e24\u5706\u76f8\u4ea4 R-r\uff1cd\uff1cR+r(R\uff1er)
\u2463\u4e24\u5706\u5185\u5207 d=R-r(R\uff1er) \u2464\u4e24\u5706\u5185\u542bd\uff1cR-r(R\uff1er)
136\u5b9a\u7406 \u76f8\u4ea4\u4e24\u5706\u7684\u8fde\u5fc3\u7ebf\u5782\u76f4\u5e73\u5206\u4e24\u5706\u7684\u516c\u5171\u5f26
137\u5b9a\u7406 \u628a\u5706\u5206\u6210n(n\u22653):
\u2474\u4f9d\u6b21\u8fde\u7ed3\u5404\u5206\u70b9\u6240\u5f97\u7684\u591a\u8fb9\u5f62\u662f\u8fd9\u4e2a\u5706\u7684\u5185\u63a5\u6b63n\u8fb9\u5f62
\u2475\u7ecf\u8fc7\u5404\u5206\u70b9\u4f5c\u5706\u7684\u5207\u7ebf\uff0c\u4ee5\u76f8\u90bb\u5207\u7ebf\u7684\u4ea4\u70b9\u4e3a\u9876\u70b9\u7684\u591a\u8fb9\u5f62\u662f\u8fd9\u4e2a\u5706\u7684\u5916\u5207\u6b63n\u8fb9\u5f62
138\u5b9a\u7406 \u4efb\u4f55\u6b63\u591a\u8fb9\u5f62\u90fd\u6709\u4e00\u4e2a\u5916\u63a5\u5706\u548c\u4e00\u4e2a\u5185\u5207\u5706\uff0c\u8fd9\u4e24\u4e2a\u5706\u662f\u540c\u5fc3\u5706
139\u6b63n\u8fb9\u5f62\u7684\u6bcf\u4e2a\u5185\u89d2\u90fd\u7b49\u4e8e\uff08n-2\uff09\u00d7180\u00b0\uff0fn
140\u5b9a\u7406 \u6b63n\u8fb9\u5f62\u7684\u534a\u5f84\u548c\u8fb9\u5fc3\u8ddd\u628a\u6b63n\u8fb9\u5f62\u5206\u62102n\u4e2a\u5168\u7b49\u7684\u76f4\u89d2\u4e09\u89d2\u5f62
141\u6b63n\u8fb9\u5f62\u7684\u9762\u79efSn=pnrn\uff0f2 p\u8868\u793a\u6b63n\u8fb9\u5f62\u7684\u5468\u957f
142\u6b63\u4e09\u89d2\u5f62\u9762\u79ef\u221a3a\uff0f4 a\u8868\u793a\u8fb9\u957f
143\u5982\u679c\u5728\u4e00\u4e2a\u9876\u70b9\u5468\u56f4\u6709k\u4e2a\u6b63n\u8fb9\u5f62\u7684\u89d2\uff0c\u7531\u4e8e\u8fd9\u4e9b\u89d2\u7684\u548c\u5e94\u4e3a
360\u00b0\uff0c\u56e0\u6b64k\u00d7(n-2)180\u00b0\uff0fn=360\u00b0\u5316\u4e3a\uff08n-2\uff09(k-2)=4
144\u5f27\u957f\u8ba1\u7b97\u516c\u5f0f\uff1aL=n\u5140R\uff0f180
145\u6247\u5f62\u9762\u79ef\u516c\u5f0f\uff1aS\u6247\u5f62=n\u5140R^2\uff0f360=LR\uff0f2
146\u5185\u516c\u5207\u7ebf\u957f= d-(R-r) \u5916\u516c\u5207\u7ebf\u957f= d-(R+r)
\uff08\u8fd8\u6709\u4e00\u4e9b\uff0c\u5927\u5bb6\u5e2e\u8865\u5145\u5427\uff09
\u5b9e\u7528\u5de5\u5177:\u5e38\u7528\u6570\u5b66\u516c\u5f0f
\u516c\u5f0f\u5206\u7c7b \u516c\u5f0f\u8868\u8fbe\u5f0f
\u4e58\u6cd5\u4e0e\u56e0\u5f0f\u5206 a2-b2=(a+b)(a-b) a3+b3=(a+b)(a2-ab+b2) a3-b3=(a-b(a2+ab+b2)
\u4e09\u89d2\u4e0d\u7b49\u5f0f |a+b|\u2264|a|+|b| |a-b|\u2264|a|+|b| |a|\u2264b-b\u2264a\u2264b
|a-b|\u2265|a|-|b| -|a|\u2264a\u2264|a|
\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0b\u7684\u89e3 -b+\u221a(b2-4ac)/2a -b-\u221a(b2-4ac)/2a
\u6839\u4e0e\u7cfb\u6570\u7684\u5173\u7cfb X1+X2=-b/a X1*X2=c/a \u6ce8\uff1a\u97e6\u8fbe\u5b9a\u7406
\u5224\u522b\u5f0f
b2-4ac=0 \u6ce8\uff1a\u65b9\u7a0b\u6709\u4e24\u4e2a\u76f8\u7b49\u7684\u5b9e\u6839
b2-4ac>0 \u6ce8\uff1a\u65b9\u7a0b\u6709\u4e24\u4e2a\u4e0d\u7b49\u7684\u5b9e\u6839
b2-4ac<0 \u6ce8\uff1a\u65b9\u7a0b\u6ca1\u6709\u5b9e\u6839\uff0c\u6709\u5171\u8f6d\u590d\u6570\u6839
\u4e09\u89d2\u51fd\u6570\u516c\u5f0f
\u4e24\u89d2\u548c\u516c\u5f0f
sin(A+B)=sinAcosB+cosAsinB sin(A-B)=sinAcosB-sinBcosA
cos(A+B)=cosAcosB-sinAsinB cos(A-B)=cosAcosB+sinAsinB
tan(A+B)=(tanA+tanB)/(1-tanAtanB) tan(A-B)=(tanA-tanB)/(1+tanAtanB)
ctg(A+B)=(ctgActgB-1)/(ctgB+ctgA) ctg(A-B)=(ctgActgB+1)/(ctgB-ctgA)
\u500d\u89d2\u516c\u5f0f
tan2A=2tanA/(1-tan2A) ctg2A=(ctg2A-1)/2ctga
cos2a=cos2a-sin2a=2cos2a-1=1-2sin2a
\u534a\u89d2\u516c\u5f0f
sin(A/2)=\u221a((1-cosA)/2) sin(A/2)=-\u221a((1-cosA)/2)
cos(A/2)=\u221a((1+cosA)/2) cos(A/2)=-\u221a((1+cosA)/2)
tan(A/2)=\u221a((1-cosA)/((1+cosA)) tan(A/2)=-\u221a((1-cosA)/((1+cosA))
ctg(A/2)=\u221a((1+cosA)/((1-cosA)) ctg(A/2)=-\u221a((1+cosA)/((1-cosA))
\u548c\u5dee\u5316\u79ef
2sinAcosB=sin(A+B)+sin(A-B) 2cosAsinB=sin(A+B)-sin(A-B)
2cosAcosB=cos(A+B)-sin(A-B) -2sinAsinB=cos(A+B)-cos(A-B)
sinA+sinB=2sin((A+B)/2)cos((A-B)/2 cosA+cosB=2cos((A+B)/2)sin((A-B)/2)
tanA+tanB=sin(A+B)/cosAcosB tanA-tanB=sin(A-B)/cosAcosB
ctgA+ctgBsin(A+B)/sinAsinB -ctgA+ctgBsin(A+B)/sinAsinB
\u67d0\u4e9b\u6570\u5217\u524dn\u9879\u548c
1+2+3+4+5+6+7+8+9+\u2026+n=n(n+1)/2 1+3+5+7+9+11+13+15+\u2026+(2n-1)=n2
2+4+6+8+10+12+14+\u2026+(2n)=n(n+1) 12+22+32+42+52+62+72+82+\u2026+n2=n(n+1)(2n+1)/6
13+23+33+43+53+63+\u2026n3=n2(n+1)2/4 1*2+2*3+3*4+4*5+5*6+6*7+\u2026+n(n+1)=n(n+1)(n+2)/3
\u6b63\u5f26\u5b9a\u7406 a/sinA=b/sinB=c/sinC=2R \u6ce8\uff1a \u5176\u4e2d R \u8868\u793a\u4e09\u89d2\u5f62\u7684\u5916\u63a5\u5706\u534a\u5f84
\u4f59\u5f26\u5b9a\u7406 b2=a2+c2-2accosB \u6ce8\uff1a\u89d2B\u662f\u8fb9a\u548c\u8fb9c\u7684\u5939\u89d2
\u5706\u7684\u6807\u51c6\u65b9\u7a0b (x-a)2+(y-b)2=r2 \u6ce8\uff1a\uff08a,b\uff09\u662f\u5706\u5fc3\u5750\u6807
\u5706\u7684\u4e00\u822c\u65b9\u7a0b x2+y2+Dx+Ey+F=0 \u6ce8\uff1aD2+E2-4F>0
\u629b\u7269\u7ebf\u6807\u51c6\u65b9\u7a0b y2=2px y2=-2px x2=2py x2=-2py
\u76f4\u68f1\u67f1\u4fa7\u9762\u79ef S=c*h \u659c\u68f1\u67f1\u4fa7\u9762\u79ef S=c'*h
\u6b63\u68f1\u9525\u4fa7\u9762\u79ef S=1/2c*h' \u6b63\u68f1\u53f0\u4fa7\u9762\u79ef S=1/2(c+c')h'
\u5706\u53f0\u4fa7\u9762\u79ef S=1/2(c+c')l=pi(R+r)l \u7403\u7684\u8868\u9762\u79ef S=4pi*r2
\u5706\u67f1\u4fa7\u9762\u79ef S=c*h=2pi*h \u5706\u9525\u4fa7\u9762\u79ef S=1/2*c*l=pi*r*l
\u5f27\u957f\u516c\u5f0f l=a*r a\u662f\u5706\u5fc3\u89d2\u7684\u5f27\u5ea6\u6570r >0 \u6247\u5f62\u9762\u79ef\u516c\u5f0f s=1/2*l*r
\u9525\u4f53\u4f53\u79ef\u516c\u5f0f V=1/3*S*H \u5706\u9525\u4f53\u4f53\u79ef\u516c\u5f0f V=1/3*pi*r2h
\u659c\u68f1\u67f1\u4f53\u79ef V=S'L \u6ce8\uff1a\u5176\u4e2d,S'\u662f\u76f4\u622a\u9762\u9762\u79ef\uff0c L\u662f\u4fa7\u68f1\u957f
\u67f1\u4f53\u4f53\u79ef\u516c\u5f0f V=s*h \u5706\u67f1\u4f53 V=pi*r2h
\u957f\u65b9\u5f62\u7684\u5468\u957f=\uff08\u957f+\u5bbd\uff09\u00d72
\u6b63\u65b9\u5f62\u7684\u5468\u957f=\u8fb9\u957f\u00d74
\u957f\u65b9\u5f62\u7684\u9762\u79ef=\u957f\u00d7\u5bbd
\u6b63\u65b9\u5f62\u7684\u9762\u79ef=\u8fb9\u957f\u00d7\u8fb9\u957f
\u4e09\u89d2\u5f62\u7684\u9762\u79ef=\u5e95\u00d7\u9ad8\u00f72
\u5e73\u884c\u56db\u8fb9\u5f62\u7684\u9762\u79ef=\u5e95\u00d7\u9ad8
\u68af\u5f62\u7684\u9762\u79ef=\uff08\u4e0a\u5e95+\u4e0b\u5e95\uff09\u00d7\u9ad8\u00f72
\u76f4\u5f84=\u534a\u5f84\u00d72 \u534a\u5f84=\u76f4\u5f84\u00f72
\u5706\u7684\u5468\u957f=\u5706\u5468\u7387\u00d7\u76f4\u5f84=
\u5706\u5468\u7387\u00d7\u534a\u5f84\u00d72
\u5706\u7684\u9762\u79ef=\u5706\u5468\u7387\u00d7\u534a\u5f84\u00d7\u534a\u5f84
\u957f\u65b9\u4f53\u7684\u8868\u9762\u79ef=
\uff08\u957f\u00d7\u5bbd+\u957f\u00d7\u9ad8\uff0b\u5bbd\u00d7\u9ad8\uff09\u00d72
\u957f\u65b9\u4f53\u7684\u4f53\u79ef =\u957f\u00d7\u5bbd\u00d7\u9ad8
\u6b63\u65b9\u4f53\u7684\u8868\u9762\u79ef=\u68f1\u957f\u00d7\u68f1\u957f\u00d76
\u6b63\u65b9\u4f53\u7684\u4f53\u79ef=\u68f1\u957f\u00d7\u68f1\u957f\u00d7\u68f1\u957f
\u5706\u67f1\u7684\u4fa7\u9762\u79ef=\u5e95\u9762\u5706\u7684\u5468\u957f\u00d7\u9ad8
\u5706\u67f1\u7684\u8868\u9762\u79ef=\u4e0a\u4e0b\u5e95\u9762\u9762\u79ef+\u4fa7\u9762\u79ef
\u5706\u67f1\u7684\u4f53\u79ef=\u5e95\u9762\u79ef\u00d7\u9ad8
\u5706\u9525\u7684\u4f53\u79ef=\u5e95\u9762\u79ef\u00d7\u9ad8\u00f73
\u957f\u65b9\u4f53\uff08\u6b63\u65b9\u4f53\u3001\u5706\u67f1\u4f53\uff09
\u7684\u4f53\u79ef=\u5e95\u9762\u79ef\u00d7\u9ad8
\u5e73\u9762\u56fe\u5f62
\u540d\u79f0 \u7b26\u53f7 \u5468\u957fC\u548c\u9762\u79efS
\u6b63\u65b9\u5f62 a\u2014\u8fb9\u957f C\uff1d4a
S\uff1da2
\u957f\u65b9\u5f62 a\u548cb\uff0d\u8fb9\u957f C\uff1d2(a+b)
S\uff1dab
\u4e09\u89d2\u5f62 a,b,c\uff0d\u4e09\u8fb9\u957f
h\uff0da\u8fb9\u4e0a\u7684\u9ad8
s\uff0d\u5468\u957f\u7684\u4e00\u534a
A,B,C\uff0d\u5185\u89d2
\u5176\u4e2ds\uff1d(a+b+c)/2 S\uff1dah/2
\uff1dab/2\u00b7sinC
\uff1d[s(s-a)(s-b)(s-c)]1/2
\uff1da2sinBsinC/(2sinA)
\u56db\u8fb9\u5f62 d,D\uff0d\u5bf9\u89d2\u7ebf\u957f
\u03b1\uff0d\u5bf9\u89d2\u7ebf\u5939\u89d2 S\uff1ddD/2\u00b7sin\u03b1
\u5e73\u884c\u56db\u8fb9\u5f62 a,b\uff0d\u8fb9\u957f
h\uff0da\u8fb9\u7684\u9ad8
\u03b1\uff0d\u4e24\u8fb9\u5939\u89d2 S\uff1dah
\uff1dabsin\u03b1
\u83f1\u5f62 a\uff0d\u8fb9\u957f
\u03b1\uff0d\u5939\u89d2
D\uff0d\u957f\u5bf9\u89d2\u7ebf\u957f
d\uff0d\u77ed\u5bf9\u89d2\u7ebf\u957f S\uff1dDd/2
\uff1da2sin\u03b1
\u68af\u5f62 a\u548cb\uff0d\u4e0a\u3001\u4e0b\u5e95\u957f
h\uff0d\u9ad8
m\uff0d\u4e2d\u4f4d\u7ebf\u957f S\uff1d(a+b)h/2
\uff1dmh
\u5706 r\uff0d\u534a\u5f84
d\uff0d\u76f4\u5f84 C\uff1d\u03c0d\uff1d2\u03c0r
S\uff1d\u03c0r2
\uff1d\u03c0d2/4
\u6247\u5f62 r\u2014\u6247\u5f62\u534a\u5f84
a\u2014\u5706\u5fc3\u89d2\u5ea6\u6570
C\uff1d2r\uff0b2\u03c0r\u00d7(a/360)
S\uff1d\u03c0r2\u00d7(a/360)
\u5f13\u5f62 l\uff0d\u5f27\u957f
b\uff0d\u5f26\u957f
h\uff0d\u77e2\u9ad8
r\uff0d\u534a\u5f84
\u03b1\uff0d\u5706\u5fc3\u89d2\u7684\u5ea6\u6570 S\uff1dr2/2\u00b7(\u03c0\u03b1/180-sin\u03b1)
\uff1dr2arccos[(r-h)/r] - (r-h)(2rh-h2)1/2
\uff1d\u03c0\u03b1r2/360 - b/2\u00b7[r2-(b/2)2]1/2
\uff1dr(l-b)/2 + bh/2
\u22482bh/3
\u5706\u73af R\uff0d\u5916\u5706\u534a\u5f84
r\uff0d\u5185\u5706\u534a\u5f84
D\uff0d\u5916\u5706\u76f4\u5f84
d\uff0d\u5185\u5706\u76f4\u5f84 S\uff1d\u03c0(R2-r2)
\uff1d\u03c0(D2-d2)/4
\u692d\u5706 D\uff0d\u957f\u8f74
d\uff0d\u77ed\u8f74 S\uff1d\u03c0Dd/4
\u7acb\u65b9\u56fe\u5f62
\u540d\u79f0 \u7b26\u53f7 \u9762\u79efS\u548c\u4f53\u79efV
\u6b63\u65b9\u4f53 a\uff0d\u8fb9\u957f S\uff1d6a2
V\uff1da3
\u957f\u65b9\u4f53 a\uff0d\u957f
b\uff0d\u5bbd
c\uff0d\u9ad8 S\uff1d2(ab+ac+bc)
V\uff1dabc
\u68f1\u67f1 S\uff0d\u5e95\u9762\u79ef
h\uff0d\u9ad8 V\uff1dSh
\u68f1\u9525 S\uff0d\u5e95\u9762\u79ef
h\uff0d\u9ad8 V\uff1dSh/3
\u68f1\u53f0 S1\u548cS2\uff0d\u4e0a\u3001\u4e0b\u5e95\u9762\u79ef
h\uff0d\u9ad8 V\uff1dh[S1+S2+(S1S1)1/2]/3
\u62df\u67f1\u4f53 S1\uff0d\u4e0a\u5e95\u9762\u79ef
S2\uff0d\u4e0b\u5e95\u9762\u79ef
S0\uff0d\u4e2d\u622a\u9762\u79ef
h\uff0d\u9ad8 V\uff1dh(S1+S2+4S0)/6
\u5706\u67f1 r\uff0d\u5e95\u534a\u5f84
h\uff0d\u9ad8
C\u2014\u5e95\u9762\u5468\u957f
S\u5e95\u2014\u5e95\u9762\u79ef
S\u4fa7\u2014\u4fa7\u9762\u79ef
S\u8868\u2014\u8868\u9762\u79ef C\uff1d2\u03c0r
S\u5e95\uff1d\u03c0r2
S\u4fa7\uff1dCh
S\u8868\uff1dCh+2S\u5e95
V\uff1dS\u5e95h
\uff1d\u03c0r2h
\u7a7a\u5fc3\u5706\u67f1 R\uff0d\u5916\u5706\u534a\u5f84
r\uff0d\u5185\u5706\u534a\u5f84
h\uff0d\u9ad8 V\uff1d\u03c0h(R2-r2)
\u76f4\u5706\u9525 r\uff0d\u5e95\u534a\u5f84
h\uff0d\u9ad8 V\uff1d\u03c0r2h/3
\u5706\u53f0 r\uff0d\u4e0a\u5e95\u534a\u5f84
R\uff0d\u4e0b\u5e95\u534a\u5f84
h\uff0d\u9ad8 V\uff1d\u03c0h(R2\uff0bRr\uff0br2)/3
\u7403 r\uff0d\u534a\u5f84
d\uff0d\u76f4\u5f84 V\uff1d4/3\u03c0r3\uff1d\u03c0d2/6
\u7403\u7f3a h\uff0d\u7403\u7f3a\u9ad8
r\uff0d\u7403\u534a\u5f84
a\uff0d\u7403\u7f3a\u5e95\u534a\u5f84 V\uff1d\u03c0h(3a2+h2)/6
\uff1d\u03c0h2(3r-h)/3
a2\uff1dh(2r-h)
\u7403\u53f0 r1\u548cr2\uff0d\u7403\u53f0\u4e0a\u3001\u4e0b\u5e95\u534a\u5f84
h\uff0d\u9ad8 V\uff1d\u03c0h[3(r12\uff0br22)+h2]/6
\u5706\u73af\u4f53 R\uff0d\u73af\u4f53\u534a\u5f84
D\uff0d\u73af\u4f53\u76f4\u5f84
r\uff0d\u73af\u4f53\u622a\u9762\u534a\u5f84
d\uff0d\u73af\u4f53\u622a\u9762\u76f4\u5f84 V\uff1d2\u03c02Rr2
\uff1d\u03c02Dd2/4
\u6876\u72b6\u4f53 D\uff0d\u6876\u8179\u76f4\u5f84
d\uff0d\u6876\u5e95\u76f4\u5f84
h\uff0d\u6876\u9ad8 V\uff1d\u03c0h(2D2\uff0bd2)/12
(\u6bcd\u7ebf\u662f\u5706\u5f27\u5f62,\u5706\u5fc3\u662f\u6876\u7684\u4e2d\u5fc3)
V\uff1d\u03c0h(2D2\uff0bDd\uff0b3d2/4)/15
(\u6bcd\u7ebf\u662f\u629b\u7269\u7ebf\u5f62)
圆柱:s=2*3.14*r^2+2*3.14*r*h 体积:3.14*r^2*h
圆锥:s=3.14*r^2+3.14*r*R 体积:1/3相同高与低面半径的圆柱体积 (注:r底面半径,R为母线长)
球:面积:4*3.14*r^2 体积:(4*3.14*r^3)/3
正四面体:面积:a^2*根号3,体积:(a^3/12)*根号2 (a为边长)
勾股定理:直角三角形的两直角边的平方和等于斜边的平方
各种面积；三角形：底×高÷2
正方形：边长×4
矩形：a×b
圆形：3.14×r的平方
扇形：(1÷2）rl
椭圆：3.14ab
球:面积:4*3.14*r^2
圆
柱:s=2*3.14*r^2+2*3.14*r*h
圆锥:s=3.14*r^2+3.14*r*R
正四面体:面积:a^2*根号3
各个体积：
棱，圆柱：=sh
棱，圆锥==(1÷3）sh
球：=(4÷3）3.14r立方
勾股定理:直角三角形的两直角边的平方和等于斜边的平方
锥形体积=1/3*s（底面积）*h（高）
柱形=s（底面积）*h（高）
立方体=a*b*h（长宽高）
勾股定律a^2+b^2=c^2,a、b为直角三角形直边，c为斜边
勾股定理:直角三角形的两直角边的平方和等于斜边的平方
各种面积：三角形=(1÷2）ah
矩形：a×b
圆形：3.14×r的平方
扇形：(1÷2）rl
椭圆：3.14ab
各个体积：
棱，圆柱：=sh
棱，圆锥==(1÷3）sh
球：=(4÷3）3.14r立方
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绛旓細闀挎柟浣, 闈㈢Нs=2(ab+bc+ac)浣撶Н:v=abc 鍦嗘煴:s=2*3.14*r^2+2*3.14*r*h 浣撶Н:3.14*r^2*h 鍦嗛敟:s=3.14*r^2+3.14*r*R 浣撶Н:1/3鐩稿悓楂樹笌浣庨潰鍗婂緞鐨勫渾鏌变綋绉 (娉:r搴曢潰鍗婂緞,R涓烘瘝绾块暱)鐞:闈㈢Н:4*3.14*r^2 浣撶Н:(4*3.14*r^3)/3 姝ｅ洓闈綋:闈㈢Н:a^2*鏍瑰彿...
绛旓細1銆佸渾鏌变綋:琛闈㈢Н:2蟺Rr+2蟺Rh 浣撶Н:蟺R??h (R涓哄渾鏌变綋涓婁笅搴曞渾鍗婂緞,h涓哄渾鏌变綋楂)2銆佸渾閿ヤ綋:琛ㄩ潰绉:蟺R??+蟺R[(h??+R??)鐨勫钩鏂规牴] 浣撶Н: 蟺R??h/3 (r涓哄渾閿ヤ綋浣庡渾鍗婂緞,h涓哄叾楂,3銆佹鏂逛綋 a锛嶈竟闀匡紝 S锛6a?? 锛孷锛漚??4銆侀暱鏂逛綋 a锛嶉暱 ,b锛嶅 ,c锛嶉珮 S锛2(...
绛旓細1銆佷綋绉細V=a*a*h鎴朧=S*h*h锛2銆佽〃闈㈢Н锛歋=6a*a+4a*h锛涘叾涓紝V浠ｈ〃浣撶Н锛宎銆乭鍒嗗埆浠ｈ〃杈归暱鍜岄珮锛孲鏄簳闈㈢Н銆備簩銆侀暱鏂逛綋鐨勮〃闈㈢Н鍜屼綋绉叕寮 1銆佷綋绉細V=S*h*h鎴朧=a*b*h锛2銆琛ㄩ潰绉細S=2(ab+ac+bc)-S锛涘叾涓紝V浠ｈ〃浣撶Н锛宎銆乥銆乧鍒嗗埆浠ｈ〃闀裤佸銆侀珮锛孲鏄簳闈㈢Н銆備笁銆佸渾鏌...
绛旓細鍑犱綍浣撶殑琛ㄩ潰绉,浣撶Н璁＄畻鍏紡1銆佸渾鏌变綋:琛ㄩ潰绉:2蟺Rr+2蟺Rh浣撶Н:蟺R²h(R涓哄渾鏌变綋涓婁笅搴曞渾鍗婂緞,h涓哄渾鏌变綋楂)2銆佸渾閿ヤ綋:琛ㄩ潰绉:蟺R²+蟺R[(h²+R²)鐨勫钩鏂规牴]浣撶Н:蟺R²h/3(r涓哄渾閿ヤ綋浣庡渾鍗婂緞,h涓哄叾楂,3銆佹鏂逛綋a锛嶈竟闀,S锛6a²,V锛漚³4...
绛旓細鍦嗛敟浣撲綋绉:V=(1/3)Sh锛圫鏄簳闈㈢Н锛宧鏄珮锛変笁妫遍敟鏄珛浣撶┖闂翠腑鏈鏅氭渶鍩烘湰鐨勫浘褰锛屾濡備笁瑙掑舰涔嬩簬浜岀淮绌洪棿銆傚凡鐭ョ┖闂村唴涓夎褰笁椤剁偣鍧愭爣A锛坅₁,a₂,a₃锛夛紝B锛坆₁,b₂,b₃锛夛紝C锛坈₁,c₂,c₃锛夛紝O涓哄師鐐癸紝鍒欎笁妫遍敟 O-ABC鐨...
绛旓細浣撶Н璁＄畻鍏紡鏄敤浜庤绠浣撶Н鐨勫叕寮銆傚嵆璁＄畻鍚勭鍑犱綍浣浣撶Н鐨勬暟瀛︾畻寮忋傛煴浣擄細甯歌鍏紡锛歏=Sh(S鏄簳闈㈢Н锛宧鏄珮)鍦嗘煴:V=蟺r²h(r浠ｈ〃搴曞渾鍗婂緞锛宧浠ｈ〃鍦嗘煴浣撶殑楂)妫辨煴:锛圴=Sh搴曢潰绉楅珮锛夐暱鏂逛綋锛歏=abc(a銆乥銆乧鍒嗗埆琛ㄧず闀挎柟浣撶殑闀裤佸銆侀珮)姝ｆ柟浣擄細V=a³锛坅琛ㄧず姝ｆ柟浣撶殑妫遍暱锛...
绛旓細姝ｆ柟浣杈归暱涓篴 S=6a^2 V=a^3 闀挎柟浣撻暱a瀹絙楂榗 S=2锛坅b+bc+ac锛塚=abc 鍦嗘煴浣撳簳闈㈠崐寰剅楂榟 S=蟺r^2+2蟺rh V=h蟺r^2 鍦嗛敟浣撳簳闈㈠崐寰剅楂榟 S=2蟺rh V=h蟺r^2 姝ｅ洓闈綋杈归暱a S=鈭3a^2 V=a^3鈭3/4
绛旓細甯歌鍑犱綍鍥惧舰鍜鍑犱綍浣撶殑琛闈㈢Н鍏紡濡備笅鎶勶細1銆侀暱鏂瑰舰鐨勫懆闀=锛堥暱+瀹斤級脳2 C=(a+b)脳2銆2銆佹鏂瑰舰鐨勫懆闀=杈归暱脳4 C=4a銆3銆侀暱鏂瑰舰鐨勯潰绉=闀棵楀 S=ab銆4銆佹鏂瑰舰鐨勯潰绉=杈归暱脳杈归暱 S=a^琚2銆5銆佷笁瑙掑舰鐨勯潰绉=搴暶楅珮梅2 S=ah梅2銆6銆佸钩鐭ヨ鍥涜竟褰㈢殑闈㈢Н=搴暶楅珮 S=ah銆7銆佹褰㈢殑...
绛旓細闀挎柟浣 a锛嶉暱 b锛嶅 c锛嶉珮 S锛2(ab+ac+bc)V锛漚bc 妫辨煴 S锛嶅簳闈㈢Н h锛嶉珮 V锛漇h 妫遍敟 S锛嶅簳闈㈢Н h锛嶉珮 V锛漇h/3 妫卞彴 S1鍜孲2锛嶄笂銆佷笅搴曢潰绉 h锛嶉珮 V锛漢[S1+S2+(S1S2)^1/2]/3 鎷熸煴浣 S1锛嶄笂搴曢潰绉 S2锛嶄笅搴曢潰绉 S0锛嶄腑鎴潰绉 h锛嶉珮 V锛漢(S1+S2+4S0)/6 鍦嗘煴 r锛...
绛旓細鐞冪己浣撶Н鍏紡锛澫h²(3R-h)梅3 鐞冧綋绉叕寮忥細V锛4蟺R³/3 妫辨煴浣撶Н鍏紡锛歏锛漇搴曢潰脳h锛漇鐩存埅闈⒚條 锛坙涓轰晶妫遍暱,h涓洪珮)妫卞彴浣撶Н锛歏=[S1锛婼2锛嬪紑鏍瑰彿锛圫1*S2锛塢h锛3 娉細V锛氫綋绉紱S1锛氫笂琛闈㈢Н锛汼2锛氫笅琛ㄩ潰绉紱h锛氶珮銆--- 鍑犱綍浣撶殑琛ㄩ潰绉绠楀叕寮 鍦嗘煴浣:琛ㄩ潰绉:2蟺Rr...
