Two bars, each weighing $3\mathrm{.}2l\frac{b}{f}t,$ are welded together as shown in figure below. With $A=3\mathrm{.}9ft$ and $B=5\mathrm{.}6ft,$ find $I_{zz}^C,$ the moment of inertia with respect to the center of the

mass in slug$-f{t}^2.$