Asked by kudu

A solid cone of height 12cm and radius 9 cm is recast into a solid sphere. Calculate the surface area of the sphere.

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Answered by Steve
cone: v = 1/3 pi r^2 h
using that v, then for the sphere, find its radius and then area:
v = 4/3 pi r^3
a = 4 pi r^2
Answered by Mohamednur Awes
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