Moment of inertia

Find the moment inertia of a thin rectangle with sides a,ba, b and mass mm around axis perpendicular to the picture and pass through the centar of rectangle.

Hint: Moment of inertia of the rod around axis passing through his centar is I=ml212I=\frac{ml^2}{12} where ll is the lenght of the rod.

a=3,b=4,m=12a=3, b=4, m=12

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