A uniform thin bar of mass 6 m and length 12 L is bent to make a regular hexagon. Its moment of inertia about an axis passing through the center of mass and perpendicular to the plane of hexagon is

Q: A uniform thin bar of mass 6 m and length 12 L is bent to make a regular hexagon. Its moment of inertia about an axis passing through the center of mass and perpendicular to the plane of hexagon is

(a) 20 m L2

(b) 30 m L2

(c) 12/5 m L2

(d) 6 m L2

Ans: (a)