What is the moment of inertia of a trian...

What is the moment of inertia of a triangular plate `ABC` of mass `M` and side `BC='a'` about a axis passing through `A` and perpedicular to the plane of the plate?

`(Ma^(2))/6`

`(3Ma^(2))/4`

`(Ma^(2))/24`

`(Ma^(2))/12`

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