$8\mathrm{.}6\mathrm{.}4.[$Level $2]$ Determine the mass moments of inertia and products of inertia along the $\backslash ($ x$,$ y$,$ z $\backslash )$ axes for the illustrated body. Assume a mass per unit length of $\backslash (\backslash$rho $\backslash ).$ Express your results in terms of the body's mass $\backslash ($ m $\backslash ).$