Let $a=8\mathrm{.}8in.$

Type the unit, iiii, after typing the numerical answer $($Blackboard will not accept $"$in $4"$ but will accept "iiii"$).$

$6$b$.$ Determine the moment of inertia of

the cross$-$hatched region about the $y$ axis.

$1$ in$.x1$ in$.$ squares