A thin rod of mass `6 m` and length `6L` is bent into regular hexagon. The `M.I.` of the hexagon about a normal axis to plane and through centre of system is

Options

A. `ml^(2)`
B. `3mL^(2)`
C. `5mL^(2)`
D. `11 mL^(2)`

Answer

C

Explanation

`I_(rod)=(ml^(2))/12+m((sqrt(3))/2l)^(2), I_("system")=6I_(rod)`