Find $Ix$ for the cross$-$sections shown: $(18$ pts$)$

$W840d=8\mathrm{.}24in{b}_f=8\mathrm{.}07inA=11\mathrm{.}70i{n}^2,I_x=140i{n}^4,I_y=49\mathrm{.}1i{n}^4$

$C813\mathrm{.}75,d=8\mathrm{.}00in,b_f=2\mathrm{.}34inA=4\mathrm{.}04i{n}^2,I_x=36\mathrm{.}1i{n}^4,I_y=1\mathrm{.}52i{n}^4$

$y={\displaystyle \underset{?}{\overset{?}{}}}A\frac{y}{{\displaystyle \underset{?}{\overset{?}{}}}}A$

$I_x=1_x+{\displaystyle \underset{?}{\overset{?}{}}}Ad{y}^2$