$1.$ As shown, a rectangle has a base of b $=7\mathrm{.}10$ ft and a height of h $=1\mathrm{.}20$ ft $.($Figure $2)$ The rectangle's bottom is located at a distance y$1=2\mathrm{.}80$ ft from the x axis, and the rectangle's left edge is located at a distance x$1=1\mathrm{.}70$ ft from the y axis. What are Ix and Iy$,$ the area's moments of inertia, about the x and y axes, respectively?

$2.$ The semicircle shown $($Figure $3)$ has a moment of inertia about the x axis of $73\mathrm{.}0$ ft$4$ and a moment of inertia about the y axis of $73\mathrm{.}0$ ft$4.$ What is the polar moment of inertia about point C $($the centroid$)?$