Determine the location of COM of semi-circular ring \( \mathrm{P} \) of radius \( \mathrm{R} \),...

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Determine the location of COM of semi-circular ring
\( \mathrm{P} \) of radius \( \mathrm{R} \), from the centre.

W
(1) \( 4 \mathrm{R} / \pi \)
(2) \( 3 \mathrm{R} / 2 \pi \)
(3) \( 2 \mathrm{R} / \pi \)
(4) \( 5 \mathrm{R} / 2 \pi \)
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