How I Scales if we multiply all the design dimensions of an object by a scaling factor

Question:

How I Scales if we multiply all the design dimensions of an object by a scaling factor f, its volume and mass will be multiplied by f3.
(a) By what factor will its moment of inertia be multiplied?
(b) If a scale model has a rotational kinetic energy of 2.5 J, what will be the kinetic energy for the full scale object of the same material rotating at the same angular velocity?