$8-7(10$ points$)$

Find the elastic section modulus and plastic section modulus about

the $x-x$ axis for the section shown.

$($Answer $230\mathrm{.}8i{n}^3,268\mathrm{.}0i{n}^3)$

Solution: Find the elastic section modulus and plastic section modulus about

the x$-$x axis for the section shown.

$($Answer $230\mathrm{.}8$ in$3,268\mathrm{.}0$ in$3)$