For the composite cross$-$section shown in Problem $1,$ calculate the first moment of area $($Q$)$ at point A$,$ located $130mm$ above $x-$axis. The neutral axis $($N$.$A$.)$ is assumed to be $100mm$ above the $x$ axis. Note: the $100mm$ to the neutral axis may not be what you found in problem $1,$ but you should proceed with that value for this problem.

Answer question $3$