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A uniform equilateral triangular lamina ...

A uniform equilateral triangular lamina of side a has mass m. Its moment of inertia about the axis passing through the centroid and perpendicular to the plane of the lamina is :-

A

`(2ma^(2))/(3)`

B

`(ma^(2))/(3)`

C

`(ma^(2))/(6)`

D

`(ma^(2))/(12)`

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The correct Answer is:
A
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