中三求積法!緊急!
2008-03-05 6:38 am
Show that the volume V of a sphere with diameter d and surface area A is given by V=1/6Ad
回答 (1)
2008-03-05 6:53 am
✔ 最佳答案
surface area of a sphere A=4πr²volume of a sphere V=(4/3)πr^3
=(1/3)r(4πr²)
=(1/3)Ar
=(1/6)Ad since d=2r
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