Moment of inertia of hollow rectangular section having outer depth 'D' – McqOptions

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1.	Moment of inertia of hollow rectangular section having outer depth 'D' and breadth 'B' and dimensions of inner rectangle are depth ‘d’ and width 'b' about horizontal axis passing through centroid is:
A.	\(\frac{BD^3}{12}\)
B.	\(\frac{bd^3}{12}\)
C.	\(\frac{{B{D^3}\;-\;b{d^3}}}{{12}}\)
D.	\(\frac{{B{D^2}\;-\;b{d^2}}}{{12}}\)
Answer» D. \(\frac{{B{D^2}\;-\;b{d^2}}}{{12}}\)

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