A square has its side equal to the radius of ball. The ball revolves round a side to generate a surface of total area X. If Y be the surface area of the sphere ,then which option is correct?

A square has its side equal to the radius of ball. The ball revolves r

1.	A square has its side equal to the radius of ball. The ball revolves round a side to generate a surface of total area X. If Y be the surface area of the sphere ,then which option is correct?
A.	X=Y
B.	X=2Y
C.	X>Y
D.	None of these
Answer» B. X=2Y

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A square has its side equal to the radius of ball. The ball revolves round a side to generate a surface of total area X. If Y be the surface area of the sphere ,then which option is correct?

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