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A cone , a hemisphere and a cylinder stand on equal bases and have the same height then their volumes are in the ratio of (A) 3:1:2 (B) 1:2:3 (C) 2:1:3 (D) 3:2:1

1
(B)

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(B)

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Say the radius of the base and height is R,

So, The cone’s volume: hemisphere’s Volume : Volume of cylinder.

> 1/3 x π x r^2 x r : 2/3 x π x r^2 x r : π x r^2 x r

> 1/3 x 22/7 x r^3 : 2/3 x 22/7 x r^3 : 22/7 x r^3

> 1 : 2 : 3(option B)