A physical pendulum of mass $m=3\mathrm{.}48kg$ is comprised of an odd shape that has a centre$-$of$-$mass a distance of $d=0\mathrm{.}645m$ from the pivot point. The pendulum is displaced from equilibrium to $-11\mathrm{.}6$ and released from rest at $t=0s,$ and at $t=0\mathrm{.}852s$ the pendulum has reached $11\mathrm{.}6$ for the first time.

What is the moment of inertia of the pendulum?

$kg{m}^2$