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ID:60354984
大小:1.36 MB
页数:70页
时间:2020-12-05
《最新圆柱体积公式推导课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、圆柱体积公式推导__________________________________________________长方体的体积=长×宽×高正方体的体积=棱长×棱长×棱长底面积×高__________________________________________________一、将圆分成若干等分12345678910111213141516圆面积公式的推导__________________________________________________1234567816151413121110912345678161514131211109rC2二、用等分后的小块组成
2、不同的形状近似平行四边形__________________________________________________分的份数越多,拼成的图形越接近长方形。rC2_______________________________________________________________________________________________________________________________________________________________________________________________________________
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4、______________________________________________________________________________________________________高:h圆的面积:S=πr2hh个圆,h个πr2所以圆柱的体积是:πr2h_________________________________________________________________________________________________________________________________________________________
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