圆弧面积计算公式图解

[[{"txt": "\u5706\u5f27\u9762\u79ef\u8ba1\u7b97\u516c\u5f0f\u56fe\u89e3\uff1f\u4e3a\u4e86\u8ba9\u5927\u5bb6\u66f4\u597d\u8fd0\u7528\u4ee5\u53ca\u4f7f\u7528\uff0c\u63a5\u4e0b\u6765\u7ed9\u5927\u5bb6\u5206\u4eab\u3002\u4ee5\u4e0b\u5185\u5bb9\u4ec5\u4f9b\u53c2\u8003\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/2f2909e951e10ef8db1210882324d8e9cdd2cc99.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u5de5\u5177/\u539f\u6599"]}, {"txt": "\u7b14"}, {"txt": "\u7eb8"}], [{"txt": ["\u65b9\u6cd5/\u6b65\u9aa4"]}, {"txt": "\u5706\u5f27\u8ba1\u7b97\u65b9\u6cd5\u5176\u5b9e\u5f88\u7b80\u5355\uff0c\u4e07\u53d8\u4e0d\u79bb\u5176\u5b97\uff0c\u90fd\u662f\u5957\u516c\u5f0f\uff0c\u5982\u56fe\u6240\u793a\uff1b\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/3ac71c214f5793568cfb3d95effb960b3021709a.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u5982\u56fe\u6240\u793a\uff0c\u9ed1\u8272\u9762\u79ef\u7b49\u4e8eR\u6247\u5f62\u9762\u79ef\u51cf\u53bbr\u6247\u5f62\u9762\u79ef\uff0c\u6240\u4ee5\u8981\u8ba1\u7b97\u51fa\u4e24\u4e2a\u6247\u5f62\u9762\u79ef\uff0c\u5148\u7b97\u5927R\u9762\u79ef\u5728\u7b97\u5c0fr\u9762\u79ef\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/30601b6104a355e964ee2d62d22ae3efe178689a.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u6247\u5f62\u9762\u79ef\u8ba1\u7b97\u65b9\u6cd5\u662f\u5706\u5f62\u9762\u79ef\u516c\u5f0f\u4e58\u4ee5\u6247\u5f62\u89d2\u5ea6\u5728360\u5ea6\u6240\u5360\u7684\u6bd4\u4f8b\uff0c\u5982\u56fe\u6240\u793a\uff1b"}, {"img": ["https://exp-picture.cdn.bcebos.com/92174dbbf82064fb744bf4948e6104a354e96f9a.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}, {"txt": "\u540c\u7406\uff0c\u53ef\u4ee5\u53ef\u4ee5\u5f97\u51fa\u5f27\u957f\u7684\u8ba1\u7b97\u516c\u5f0f\uff0c\u5982\u56fe\u6240\u793a\uff1b\u00a0"}, {"img": ["https://exp-picture.cdn.bcebos.com/4e168d5653bbf82085bb53beba21056105a36e9a.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u603b\u7ed3"]}, {"txt": "\u6839\u636e\u4ee5\u4e0a\u7684\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u603b\u7ed3\u51fa\u4e24\u70b9\uff0c\u5706\u7684\u8ba1\u7b97\u516c\u5f0f\u53ef\u4ee5\u6f14\u53d8\u51fa\u5f88\u591a\u79cd\u8ba1\u7b97\u65b9\u6cd5\u3002\u5982\u56fe\u6240\u793a\u3002"}, {"img": ["https://exp-picture.cdn.bcebos.com/65ba880b31210561e1e3905c08aee8d7582a6a9a.m2m?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_500%2Climit_1"]}], [{"txt": ["\u6ce8\u610f\u4e8b\u9879"]}, {"txt": "\u90fd\u662f\u5706\u7684\u8ba1\u7b97\u516c\u5f0f\u6f14\u53d8\u800c\u51fa"}]]