In Figure, the pendulum consists of a uniform disk with radius r = 10.0 cm and mass

Question:

In Figure, the pendulum consists of a uniform disk with radius r = 10.0 cm and mass 500 g attached to a uniform rod with length L = 500 mm and mass 270 g.
(a) Calculate the rotational inertia of the pendulum about the pivot point.
(b) What is the distance between the pivot point and the center of mass of the pendulum?
(c) Calculate the period ofoscillation.