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Re:这题知道圆台公式就OK了。一个while语句就搞定！

Posted by huangcr at 2008-08-12 10:45:22 on Problem 2405
In Reply To:Re:这题知道圆台公式就OK了。一个while语句就搞定！ Posted by:FearNoOne at 2008-08-08 02:00:51 
> 能解释一下吗？我推的式子很繁琐啊
v=直径为D的圆柱的面积-两个园台的面积-直径为d的圆柱的面积。

V=D*s1-(1/3*(D*s1-d*s2)+s2*d)

V=2/3*(D*s1-s2*d)

s1=pi*(D/2)^2

s2=Pi*(d/2)^2
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