Q 1760667515.     A water tank, open at the top, is hemispherical at
the bottom and cvlindrical above it. The radius is `12 m` and the capacity is `3312 pi m^3`
. The ratio of the surface areas of the spherical portions, is

CDS 2015 Paper-2
A

`3:5`

B

`4:5`

C

`1:1`

D

`6:5`

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