A ring of mass 6kg and radius 40cm is re...

A ring of mass `6kg` and radius `40cm` is revolving at the rate of `300` rpm about an axis passing through its diameter. The kinetic energy of rotation of the ring is

A

`24pi^(2)J`

B

`48pi^(2)J`

C

`12pi^(2)J`

D

`6pi^(2)J`

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