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A cricket ball of radius r is exactly fitted in a cylindrical tin as shown in the figure below. The ratio of the surface area of the cricket ball to the surface area of the tin is?

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1:3

2:4

2:3

2:6

answer is C.

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Detailed Solution

The height of cylinder will be equal to the diameter of the ball.
Therefore, h=2r
Ratio of their areas
Question Image

Hence, Option (3) is the correct answer.

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