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The surface area of a cube is equal to t...

The surface area of a cube is equal to that of a sphere. If x is the volume of the cube and y is the volume of the sphere, then what is `x^(2) : y^(2)` equal to?

A

`1/2 S(dr)/(dt)`

B

`1/2 r (dS)/(dt)`

C

`r(dS)/(dt)`

D

`1/2 r^(2) (dS)/(dt)`

Text Solution

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The correct Answer is:
B
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