2011年安徽中考数学试卷及答案 安徽省2011中考数学试卷
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1~10 ACACB DBDBC
11. \uff1b 12. 100\uff1b 13. 14. \u2460\u2462.
15. \u539f\u5f0f= .
16. \u8bbe\u7c97\u52a0\u5de5\u7684\u8be5\u79cd\u5c71\u8d27\u8d28\u91cf\u4e3axkg\uff0c\u6839\u636e\u9898\u610f\uff0c\u5f97 x+(3x+2000)=10000.
\u89e3\u5f97 x=2000.
\u7b54\uff1a\u7c97\u52a0\u5de5\u7684\u8be5\u79cd\u5c71\u8d27\u8d28\u91cf\u4e3a2000kg.
17. \u5982\u4e0b\u56fe
18\uff0e\u2474A1(0,1) A3(1,0) A12(6,0)
\u2475An(2n,0)
\u2476\u5411\u4e0a
19. \u7b80\u7b54\uff1a\u2235OA \uff0c
OB=OC=1500\uff0c
\u2234AB= (m).
\u7b54\uff1a\u96a7\u9053AB\u7684\u957f\u7ea6\u4e3a635m.
20. \uff081\uff09\u7532\u7ec4\uff1a\u4e2d\u4f4d\u6570 7\uff1b \u4e59\u7ec4\uff1a\u5e73\u5747\u65707\uff0c \u4e2d\u4f4d\u65707
\uff082\uff09\uff08\u7b54\u6848\u4e0d\u552f\u4e00\uff09
\u2460\u56e0\u4e3a\u4e59\u7ec4\u5b66\u751f\u7684\u5e73\u5747\u6210\u7ee9\u9ad8\u4e8e\u7532\u7ec4\u5b66\u751f\u7684\u5e73\u5747\u6210\u7ee9\uff0c\u6240\u4ee5\u4e59\u7ec4\u5b66\u751f\u7684\u6210\u7ee9\u597d\u4e8e\u7532\u7ec4\uff1b
\u2461\u56e0\u4e3a\u7532\u4e59\u4e24\u7ec4\u5b66\u751f\u6210\u7ee9\u7684\u5e73\u5747\u5206\u76f8\u5dee\u4e0d\u5927\uff0c\u800c\u4e59\u7ec4\u5b66\u751f\u7684\u65b9\u5dee\u4f4e\u4e8e\u7532\u7ec4\u5b66\u751f\u7684\u65b9\u5dee\uff0c\u8bf4\u660e\u4e59\u7ec4\u5b66\u751f\u6210\u7ee9\u7684\u6ce2\u52a8\u6027\u6bd4\u7532\u7ec4\u5c0f\uff0c\u6240\u4ee5\u4e59\u7ec4\u5b66\u751f\u7684\u6210\u7ee9\u597d\u4e8e\u7532\u7ec4\uff1b
\u2462\u56e0\u4e3a\u4e59\u7ec4\u5b66\u751f\u6210\u7ee9\u7684\u6700\u4f4e\u5206\u9ad8\u4e8e\u7532\u7ec4\u5b66\u751f\u7684\u6700\u4f4e\u5206\uff0c\u6240\u4ee5\u4e59\u7ec4\u5b66\u751f\u7684\u6210\u7ee9\u597d\u4e8e\u7532\u7ec4\u3002
21. (1)\u7531\u9898\u610f\uff0c\u5f97 \u89e3\u5f97 \u2234
\u53c8A\u70b9\u5728\u51fd\u6570 \u4e0a\uff0c\u6240\u4ee5 \uff0c\u89e3\u5f97 \u6240\u4ee5
\u89e3\u65b9\u7a0b\u7ec4 \u5f97
\u6240\u4ee5\u70b9B\u7684\u5750\u6807\u4e3a\uff081, 2\uff09
\uff082\uff09\u5f530\uff1cx\uff1c1\u6216x\uff1e2\u65f6\uff0cy1\uff1cy2;
\u5f531\uff1cx\uff1c2\u65f6\uff0cy1\uff1ey2;
\u5f53x=1\u6216x=2\u65f6\uff0cy1=y2.
22.\uff081\uff09\u6613\u6c42\u5f97 , , \u56e0\u6b64\u5f97\u8bc1.
(2)\u6613\u8bc1\u5f97 \u223d ,\u4e14\u76f8\u4f3c\u6bd4\u4e3a \uff0c\u5f97\u8bc1.
\uff083\uff09120\u00b0\uff0c
23.\uff081\uff09\u8fc7A\u70b9\u4f5cAF\u22a5l3\u5206\u522b\u4ea4l2\u3001l3\u4e8e\u70b9E\u3001F\uff0c\u8fc7C\u70b9\u4f5cCH\u22a5l2\u5206\u522b\u4ea4l2\u3001l3\u4e8e\u70b9H\u3001G\uff0c\u8bc1\u25b3ABE\u224c\u25b3CDG\u5373\u53ef.
\uff082\uff09\u6613\u8bc1\u25b3ABE\u224c\u25b3BCH\u224c\u25b3CDG\u224c\u25b3DAF,\u4e14\u4e24\u76f4\u89d2\u8fb9\u957f\u5206\u522b\u4e3ah1\u3001h1+h2,\u56db\u8fb9\u5f62EFGH\u662f\u8fb9\u957f\u4e3ah2\u7684\u6b63\u65b9\u5f62\uff0c
\u6240\u4ee5 .
(3)\u7531\u9898\u610f\uff0c\u5f97 \u6240\u4ee5
\u53c8 \u89e3\u5f970\uff1ch1\uff1c
\u2234\u5f530\uff1ch1\uff1c \u65f6\uff0cS\u968fh1\u7684\u589e\u5927\u800c\u51cf\u5c0f\uff1b
\u5f53h1= \u65f6\uff0cS\u53d6\u5f97\u6700\u5c0f\u503c \uff1b
\u5f53 \uff1ch1\uff1c \u65f6\uff0cS\u968fh1\u7684\u589e\u5927\u800c\u589e\u5927.
\u6570\u5b66\u8bd5\u9898\u53c2\u8003\u7b54\u6848\u53ca\u8bc4\u5206\u6807\u51c6
\u4e00\u3001\u9009\u62e9\u9898\uff08\u672c\u5927\u9898\u517110\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98984\u5206\uff0c\u6ee1\u520640\u5206\uff09
\u9898\u53f712345678910
\u7b54\u6848ACACBDBDBC
\u4e8c\u3001\u586b\u7a7a\u9898\uff08\u672c\u5927\u9898\u51714\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98985\u5206\uff0c\u6ee1\u520620\u5206\uff09
11\u3001 12\u3001100 13\u3001 14\u3001\u2460\u2462
\u4e09\u3001\uff08\u672c\u5927\u9898\u51712\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98988\u5206\uff0c\u6ee1\u520616\u5206\uff09
15\u3001\u89e3\uff1a\u539f\u5f0f= .
\u5f53 \u65f6\uff0c\u539f\u5f0f= .
16\u3001\u89e3\uff1a\u8bbe\u7c97\u52a0\u5de5\u7684\u8be5\u79cd\u5c71\u8d27\u8d28\u91cf\u4e3a \u5343\u514b\uff0c \uff081\u5206\uff09
\u6839\u636e\u9898\u610f\u5f97
\uff085\u5206\uff09
\u89e3\u5f97 \uff087\u5206\uff09
\u6240\u4ee5\u7c97\u52a0\u5de5\u7684\u8be5\u79cd\u5c71\u8d27\u8d28\u91cf\u4e3a \u5343\u514b. \uff088\u5206\uff09
\u56db\u3001\uff08\u672c\u5927\u9898\u51712\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98988\u5206\uff0c\u6ee1\u520616\u5206\uff09
17\u3001\uff081\uff09\u6b63\u786e\u56fe\u5f62\u5982\u53f3\u56fe \uff084\u5206\uff09
\uff082\uff09\u6b63\u786e\u56fe\u5f62\u5982\u53f3\u56fe \uff088\u5206\uff09
18\u3001\uff081\uff09 \uff083\u5206\uff09
\uff082\uff09\u89e3\uff1a \u7684\u5750\u6807\u4e3a \uff086\u5206\uff09
\uff083\uff09\u89e3\uff1a\u8682\u8681\u4ece\u70b9 \u5230 \u7684\u79fb\u52a8\u65b9\u5411\u662f\u5411\u4e0a \uff088\u5206\uff09
\u4e94\u3001\uff08\u672c\u5927\u9898\u51712\u5c0f\u9898\uff0c\u6bcf\u5c0f\u989810\u5206\uff0c\u6ee1\u520620\u5206\uff09
19\u3001\u89e3\uff1a\u7531\u6761\u4ef6\u53ef\u77e5\uff1a \u4e3a\u7b49\u8170\u4e09\u89d2\u5f62\uff0c
. \uff083\u5206\uff09
\u5728 \u4e2d\uff0c \uff0c
. \uff087\u5206\uff09
.
\u6240\u4ee5\u96a7\u9053AB\u7684\u957f\u7ea6\u4e3a635\u7c73. \uff0810\u5206\uff09
20\u3001\uff081\uff09
\u5e73\u5747\u5206\u65b9\u5dee\u4e2d\u4f4d\u6570\u5408\u683c\u7387\u4f18\u79c0\u7387
\u7532\u7ec46.92.4791.7\uff0516.7\uff05
\u4e59\u7ec471.3783.3\uff058.3\uff05
\uff084\u5206\uff09
\uff082\uff09\u2460\u4e59\u7ec4\u7684\u5e73\u5747\u5206\u6bd4\u7532\u7ec4\u9ad8\uff1b
\u2461\u4e59\u7ec4\u7684\u65b9\u5dee\u6bd4\u7532\u7ec4\u5c0f\uff1b
\u2462\u4e59\u7ec4\u5b66\u751f\u6210\u7ee9\u4e0d\u4f4e\u4e8e7\u5206\u7684\u4eba\u6570\u6bd4\u7532\u7ec4\u591a. \uff0810\u5206\uff09
\u516d\u3001\uff08\u672c\u9898\u6ee1\u520612\u5206\uff09
21\u3001\u89e3\uff1a\uff081\uff09\u7531\u76f4\u7ebf\u8fc7A\u3001C\u4e24\u70b9\u5f97
\u89e3\u5f97 \uff083\u5206\uff09
\u5c06A\u70b9\u5750\u6807\u4ee3\u5165 \u5f97 \uff085\u5206\uff09
\u8bbeB\u70b9\u5750\u6807\u4e3a \uff0c \u662f\u51fd\u6570 \u4e0e \u56fe\u8c61\u7684\u4ea4\u70b9\uff0c
\uff0c\u89e3\u5f97 \u6216 \uff0c\u7531\u9898\u610f\u77e5 \uff0c\u6b64\u65f6
\u70b9\u7684\u5750\u6807\u4e3a . \uff087\u5206\uff09
\uff082\uff09\u7531\u56fe\u77e5\uff1a\u2460\u5f53 \u65f6\uff0c \uff1b \u2461\u5f53 \u65f6\uff0c \uff1b
\u2462\u5f53 \u65f6\uff0c \uff1b \u2463\u5f53 \u65f6\uff0c \uff1b \u2464\u5f53 \u65f6\uff0c \uff1b
\u7efc\u4e0a\u6240\u8ff0\uff1a\u5f53 \u6216 \u65f6\uff0c \uff1b
\u5f53 \u6216 \u65f6\uff0c \uff1b
\u5f53 \u65f6\uff0c .
\u4e03\u3001\uff08\u672c\u9898\u6ee1\u520612\u5206\uff09
22\u3001\uff081\uff09\u8bc1\uff1a \u53c8
\u53c8 ,
\u662f\u7b49\u8fb9\u4e09\u89d2\u5f62. \uff085\u5206\uff09
\uff082\uff09\u8bc1\uff1a
\u53c8
\uff083\uff09
\u516b\u3001\uff08\u672c\u9898\u6ee1\u520614\u5206\uff09
23\u3001\uff081\uff09\u8bc1\uff1a\u8bbeAD\u4e0e \u4ea4\u4e8e\u70b9E\uff0cBC\u4e0e \u4ea4\u4e8e\u70b9F\uff0c
\u7531\u5df2\u77e5 \uff0c
\u56db\u8fb9\u5f62 \u662f\u5e73\u884c\u56db\u8fb9\u5f62\uff0c
\u53c8 . \uff084\u5206\uff09
\uff082\uff09\u8bc1\uff1a\u4f5c ,\u5782\u8db3\u5206\u522b\u4e3a
\u5728 \u548c \u4e2d,
,
.
\u53c8
\u53c8
\uff087\u5206\uff09
\uff083\uff09\u89e3\uff1a \uff0c
\u5f53 \u65f6\uff0c \u968f \u7684\u589e\u5927\u800c\u51cf\u5c0f\uff1b
\u5f53 \u65f6\uff0c \u968f \u7684\u589e\u5927\u800c\u589e\u5927\uff1b \uff0814\u5206\uff09
见图
120度，2分之三a，解法：以C为圆心，CP为半径画圆（P始终在这个圆上运动），然后找到P的位置（e的正下方），使EP最长 ...
绝对的一目了然 ...
150
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