As promised $-$ again, no integrals are needed! Use the parallel axis theorem to find the moment of inertia of each of these structures around an axis that goes through one of their ends, and compare it to what you got in HW $11!$ Were you close? Were you far off? Why?

A$.$ A thin L square $-$ two straight edges held together at right angles. Each has length $a,$ and the total mass of the pair is $M.($Remember that the moment of inertia of a rod of length $l$ and mass $m$ around an axis that goes through its CM is $m\frac{l^2}{12})$

B$.$ A thin bar bent into a semicircle of radius a and total mass M$.($And also remember that all of the points of the semicircle are at the same distance from ifs center.$)$