2
\includegraphics[max width=\textwidth, alt={}, center]{de53978b-aa96-4fa2-a928-81a16450154e-2_462_490_610_834} The diagram shows a uniform lamina \(A B C D E F\) in which all the corners are right angles. The mass of the lamina is \(3 m\).

1. Show that the moment of inertia of the lamina about \(A B\) is \(3 m a ^ { 2 }\).
2. Find the moment of inertia of the lamina about an axis perpendicular to the lamina and passing through \(A\).