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OpenStudy (anonymous):
A sphere fits exactly into a cube. What is the ratio of the surface area of the sphere to the surface area of the cube?
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OpenStudy (anonymous):
Suppose the cube has a side 'a'. Then the sphere has a diameter 'a', hence radius 'a/2'. Now simply use the formulas for surface area of the two solids. For cube it is 6a^2 and for sphere it is 4 pi r^2.
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