面積和體積(三)

2008-03-10 1:18 am
~~~~~~~~~~識計的幫幫手
某半球體的總表面積是100cm^ 。求它的體積。

回答 (1)

2008-03-10 1:47 am
✔ 最佳答案
As Total surface area of semisphere=4(pi)r^2/2+(pi)r^2



Let r be the radius of semisphere
4(pi)r^2/2+(pi)r^2=100
r=3.257350079 cm

The volume of semisphere is:
4/3(pi) /2 r^3=72.38555732 cm^3
參考: hjbi


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