Q9 of 32 Page 13

The volume of two hemispheres are in the ratio 8 : 27. Find the ratio of their radii.

Let the volumes of two hemispheres be V1 and V2 and the radii be r1 and r2 respectively.
... Ratio of the volumes of two hemispheres   =
Hence, r1 : r2 = 2 : 3

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