圆的所有计算公式，用汉字表示。帮帮忙。 九年级上册数学关于圆这一章的所有概念，帮帮忙...........
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\u3016\u5706\u4e0e\u76f4\u7ebf\u7684\u4f4d\u7f6e\u5173\u7cfb\u5224\u65ad\u3017
\u5e73\u9762\u5185\uff0c\u76f4\u7ebfAx+By+C=0\u4e0e\u5706x^2+y^2+Dx+Ey+F=0\u7684\u4f4d\u7f6e\u5173\u7cfb\u5224\u65ad\u4e00\u822c\u65b9\u6cd5\u662f\uff1a
1.\u7531Ax+By+C=0\uff0c\u53ef\u5f97y=\uff08-C-Ax\uff09\uff0fB\uff0c\uff08\u5176\u4e2dB\u4e0d\u7b49\u4e8e0\uff09\uff0c\u4ee3\u5165x^2+y^2+Dx+Ey+F=0\uff0c\u5373\u6210\u4e3a\u4e00\u4e2a\u5173\u4e8ex\u7684\u4e00\u5143\u4e8c\u6b21\u65b9\u7a0bf\uff08x\uff09=0\u3002
\u5229\u7528\u5224\u522b\u5f0fb^2-4ac\u7684\u7b26\u53f7\u53ef\u786e\u5b9a\u5706\u4e0e\u76f4\u7ebf\u7684\u4f4d\u7f6e\u5173\u7cfb\u5982\u4e0b\uff1a\u5982\u679cb^2-4ac>0\uff0c\u5219\u5706\u4e0e\u76f4\u7ebf\u67092\u4ea4\u70b9\uff0c\u5373\u5706\u4e0e\u76f4\u7ebf\u76f8\u4ea4\u3002\u5982\u679cb^2-4ac=0\uff0c\u5219\u5706\u4e0e\u76f4\u7ebf\u67091\u4ea4\u70b9\uff0c\u5373\u5706\u4e0e\u76f4\u7ebf\u76f8\u5207\u3002\u5982\u679cb^2-4ac<0\uff0c\u5219\u5706\u4e0e\u76f4\u7ebf\u67090\u4ea4\u70b9\uff0c\u5373\u5706\u4e0e\u76f4\u7ebf\u76f8\u79bb\u3002
2.\u5982\u679cB=0\u5373\u76f4\u7ebf\u4e3aAx+C=0\uff0c\u5373x=-C\uff0fA\uff0c\u5b83\u5e73\u884c\u4e8ey\u8f74\uff08\u6216\u5782\u76f4\u4e8ex\u8f74\uff09\uff0c\u5c06x^2+y^2+Dx+Ey+F=0\u5316\u4e3a\uff08x-a\uff09^2+\uff08y-b\uff09^2=r^2\u3002\u4ee4y=b\uff0c\u6c42\u51fa\u6b64\u65f6\u7684\u4e24\u4e2ax\u503cx1\u3001x2\uff0c\u5e76\u4e14\u89c4\u5b9ax1x2\u65f6\uff0c\u76f4\u7ebf\u4e0e\u5706\u76f8\u79bb\uff1b\u5f53x1<x=-C\uff0fA<x2\u65f6\uff0c\u76f4\u7ebf\u4e0e\u5706\u76f8\u4ea4\uff1b
\u534a\u5f84r\uff0c\u76f4\u5f84d\u5728\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\uff0c\u5706\u7684\u89e3\u6790\u5f0f\u4e3a\uff1a\uff08x-a\uff09^2+(y-b)^2=r^2x^2+y^2+Dx+Ey+F=0 => (x+D/2)^2+(y+E/2)^2=D^2/4+E^2/4-F => \u5706\u5fc3\u5750\u6807\u4e3a(-D/2,-E/2) \u5176\u5b9e\u4e0d\u7528\u8fd9\u6837\u7b97 \u592a\u9ebb\u70e6\u4e86 \u53ea\u8981\u4fdd\u8bc1X\u65b9Y\u65b9\u524d\u7cfb\u6570\u90fd\u662f1 \u5c31\u53ef\u4ee5\u76f4\u63a5\u5224\u65ad\u51fa\u5706\u5fc3\u5750\u6807\u4e3a(-D/2,-E/2) \u8fd9\u53ef\u4ee5\u4f5c\u4e3a
直径×圆周率＝圆的周长
直径÷2＝半径
半径×圆周率＝圆的面积
直径乘3.14，半径*2*3.14 半径的平方*周长3.14
绛旓細鐩村緞梅2锛濆崐寰 鍗婂緞脳鍦嗗懆鐜囷紳鍦嗙殑闈㈢Н
绛旓細鍦嗙殑闈㈢Н鍏紡鏄細A = 蟺脳r²锛屽叾涓瑼琛ㄧず鍦嗙殑闈㈢Н锛宺琛ㄧず鍦嗙殑鍗婂緞銆
绛旓細鍦嗛潰绉叕寮忥細S=蟺(r^2)蟺 鏄竴涓父鏁帮紝r 鎸囧渾鐨勫崐寰勶紝h鎸囧渾鐨勯珮 r^2 鎸囧崐寰勭殑骞虫柟銆傚渾鏌辩殑浣撶Н鏄 鍦嗘煴鐨勯潰绉箻浠ラ珮 v=蟺(r^2)h 鐞冪殑浣撶Н鏄 v=3/4*蟺(r^3)r^3鎸囧崐寰勭殑绔嬫柟
绛旓細闈㈢Н绛変簬鍗婂緞鐨勫钩鏂逛箻浠ュ渾鍛ㄧ巼锛屽懆闀跨瓑浜庣洿寰勪箻浠ュ渾鍛ㄧ巼鎴栨槸鍗婂緞鐨勪袱鍊嶄箻浠ュ渾鍛ㄧ巼
绛旓細R浠ｈ〃鍦嗙殑锛堝崐寰勶級銆俤琛ㄧず鍦嗙殑鐩村緞銆傚湪鍙ゅ吀鍑犱綍涓紝鍦嗘垨鍦嗙殑鍗婂緞鏄粠鍏朵腑蹇冨埌鍏跺懆杈圭殑浠讳綍绾挎锛屽苟涓斿湪鏇寸幇浠ｇ殑浣跨敤涓紝瀹冧篃鏄叾涓换浣曚竴涓殑闀垮害銆 杩欎釜鍚嶅瓧鏉ヨ嚜鎷変竵鍗婂緞锛屾剰鎬濇槸灏勭嚎锛屼篃鏄竴涓垬杞︾殑杞緪銆傚崐寰勭殑澶嶆暟鍙互鏄崐寰勶紙鎷変竵鏂囧鏁帮級鎴栧父瑙勮嫳鏂囧鏁板崐寰勩傚崐寰勭殑鍏稿瀷缂╁啓鍜屾暟瀛﹀彉閲忓悕绉颁负r銆
绛旓細瀛楁瘝琛ㄧず锛氬渾鏌变綋绉細 V=sh 鍦嗛敟浣撶Н锛歏=sh梅3 鍦嗘煴渚ч潰绉細S=ch/2蟺rh/蟺dh 鍦嗘煴琛ㄩ潰绉細s=ch+2蟺r²鍦嗘煴浣撶殑搴曢潰绉=鍦嗙殑闈㈢Н锛埾 r脳r锛夊渾閿 搴曢潰绉=鍦嗙殑闈㈢Н锛埾 r脳r锛変綋绉細V=搴曢潰绉楅珮梅3 渚ч潰绉=(1/2)(2蟺r)l=蟺rl 鍏紡涓璻涓哄簳闈㈠崐寰勶紝l涓哄渾閿ユ瘝绾匡紝伪涓轰晶闈㈠睍寮...
绛旓細鐭ラ亾鍗婂緞:鍦嗗懆鐜(鍙3.14)涔2涔樺崐寰勩傜煡閬撶洿寰:鍦嗗懆鐜囦箻鐩村緞銆
绛旓細闈㈢Н绛変簬2鍊嶇殑甯曞皵涔樹互鍗婂緞鐨勫钩鏂癸紝鍛ㄩ暱绛変簬2鍊嶇殑甯曞皵涔樹互鍗婂緞
绛旓細鍛ㄩ暱锛2脳鍦嗗懆鐜嚸楀崐寰 鍛ㄩ暱锛濆渾鍛ㄧ巼脳鐩村緞
