Moment of inertia of a solid cone about an axis passing though its centre of gravity and
parallel to base (M is the mass of the cone, r is the radius of the base and h is the altitude
of the cone) is
(a) $\frac{3M}{20}$(r2 + $\frac{h^{2}}{4}$) (b) $\frac{3M}{10}$(r2 + $\frac{h^{2}}{4}$)
(c) 10/3 Mr2 (d) 3/5 Mr2