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A circular plate has a uniform thickness...

A circular plate has a uniform thickness and has a diameter 56cm. A circular disc of diameter `42cm` is removed from one edge of the plate. The distance of centre of mass of the remaining portion from the centre of the circular plate is

A

`18cm`

B

`9cm`

C

`27cm`

D

`4.5cm`

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The correct Answer is:
B
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