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A water tank, open at the top, is hemisp...

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

A

`3:5`

B

`4:5`

C

`1:1`

D

`6:5`

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