According to this theorem, “the moment of inertia of a body about a rotational axis is equal to the moment of inertia relative to parallel axis passing through the center of mass plus the product of mass and square of the perpendicular distance between the parallel axis.” i.e,
I = ICM + Mh2
where : ICM = moment of inertia about an axis passing through center of mass
M = mass of the body
h = distance between the parallel axis.
