Part A A cylinder of mass M and radius R has a cylindrical hole of radius r centered on the axis. Find an expression for the moment of inertia of the cylinder. You should confirm that your answer agrees with expressions 12 MR2 when r = 0 (a solid disk) and MR2 when r = R (a cylindrical hoop). Express your answer in terms of some or all of the variables M, R, and r.