A pendulum is made of a rod of mass 3.7 kg and length 3.2 m whose moment of inertia about its center of mass is 1/12M L^2 and a thin cylindrical disk of mass 1.3 kg and radius 1.2 m whose moment of inertia about its center of mass is 1/2 M R^2. What is the moment of inertia of the pendulum about the pivot point? Answer in units of kg