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From a disc of mass 2kg and radius 4m a small disc of radius 1m with center $O^{\prime}$ is extracted .The new moment of inertia about an axis passing through O perpendicular to plane of disc is

#Mechanics

Easy Math Editor

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`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
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`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$