Cross$-$Section D $($L$-$Section$)$

The final cross$-$section to consider is the "Lsection" shown below. The dimensions are given as:

$b=120mm$

$d=170mm$

$t=25mm$

With reference to the origin shown above, what are the coordinates of the centroid for this crosssection:

$\stackrel{}{x}=mm$

$\frac{?}{\text{b}\text{a}\text{r}}(y)=mm$

What is the maximum and minimum second moment of area about axes passing through the centroid:

$I_{\text{m}\text{a}\text{x}}=m{m}^4$

$I_{\text{m}\text{i}\text{n}}=m{m}^4$