A pendulum is made of a rod of mass 1.7 kg and length 2.8 m whose moment of inertia about its center of mass is 1/12M L2 and a thin cylindrical disk of mass 1.5 kg and radius 1.8 m whose moment of inertia about its center ofmass is 1/2M R2. What is the moment of inertia of the pendulum about the pivot point? Answer in units of kg · m2