Q: Figure shows a thin metallic triangular sheet ABC. The mass of the sheet is M. The moment of inertia of the sheet about side AC is

(a) $ \displaystyle \frac{Ml^2}{18} $

(b) $ \displaystyle \frac{Ml^2}{12} $

(c) $ \displaystyle \frac{Ml^2}{6} $

(d) $ \displaystyle \frac{Ml^2}{4} $

Ans: (b)