Show me the steps to solve Topic $1$: $(4\mathrm{.}5$ credits$)$

Given a beam $AB$ with the corresponding cross$-$section type $"".$ The dimensions of the beam are in meters while the cross section is in centimeters.

$1\mathrm{.}1.$ Calculate the maximum normal and shear stresses developed in the beam.

$1\mathrm{.}2.$ Calculate the weak moments of inertia of the cross$-$section $($Ix$,$ Iy$)$ but also the moments of inertia of the cross$-$section in relation to a system of axes $,$ ly$)$ with the center of axes at point A of the cross$-$section.

$1\mathrm{.}3.$ Indicate the area $($if any$)$ stressed in pure bending. Calculate the maximum net bending stress and construct the cross section bending stress diagram.$|$