What is the moment of inertia of a pendulum with a mass of #8 kg# that is #1 m# from the pivot?
Taking the pendulum bulb as a point mass and the pivot as the rotational axis,
Moment of inertia of the bulb as a point mass: 
Note that the momentum of inertia expression can be derived using the parallel axis theorem: 
 List of moments of inertia, the English Wikipedia, https://en.wikipedia.org/wiki/List_of_moments_of_inertia
 Parallel axis theorem, the English Wikipedia, https://en.wikipedia.org/wiki/Parallel_axis_theorem