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A disc of radius R has a concentric hole...

A disc of radius R has a concentric hole of radius R /2 and its mass is M. Its moment of inertia about an axis through its centre and perpendicular to its plane, is

A

`1/2 MR^2`

B

`MR^2`

C

`3/8 MR^2`

D

`5/8 MR^2`

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