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From a uniform disc of radius R, a circu...

From a uniform disc of radius `R`, a circular section of radius `R//2` is cut out. The centre of the hole is at `R//2` from the centre of the original disc. Locate the centre of mass of the resulting flat body.

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COM of resulting portion lies at `R//6` from the centre of the original disc in a direction opposite to the centre of the cut out portion.
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