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A disc of radius R is cut from a larger ...

A disc of radius R is cut from a larger disc of radius 2R in such a way that the edge of the hole touches of edge of the disc. The centre of mass of the remaining portion is at

A

`R//2` from the centre of big disc away from the centre of the hole

B

`R//3` from the centre of big disc away from the centre of the hole

C

`3R//2` from the centre of big disc away from the centre of the hole

D

`5R//2` from the centre of big disc away from the centre of the hole

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The correct Answer is:
B
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