If the radius of the base and height of a cylinder and cone are each equal to r,

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If the radius of the base and height of a cylinder and cone are each equal to r, and the radius of a hemisphere is also equal to r, then the volumes of the cone, cylinder and hemisphere are in the ratio ?

Options:

A . 1 : 2 : 3

B . 1 : 3 : 2

C . 2 : 1 : 3

D . 3 : 2 : 1

Answer: Option B

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