Problem #$5.$

$12.$ Locate the centroid $\stackrel{}{x}$ of the shaded area from $y-$axis. $(3$ points$)$

a$.,30\mathrm{.}63mm.$

b$.25\mathrm{.}63$ mm $.$

c$.,34\mathrm{.}37mm.$

d$.41\mathrm{.}73$ mm $.$

$13.$ Locate the centroid $\frac{?}{\text{b}\text{a}\text{r}}(y)$ of the shaded area from $x-$axis. $(3$ points$)$

a$.,30\mathrm{.}63mm.$

b$.25\mathrm{.}63$ mm $.$

c$.,43\mathrm{.}12mm.$

d$.,46\mathrm{.}88mm.$