Diagram shows a vertical bar of length h and width b. The centroid is centered on the vertical bar along the c axis. A parallel horizontal line is at a distance d below the c axis. A caption at the bottom below the parallel horizontal line reads: any axis parallel to centroidal axis c.

In the rounds that follow, we will use the equations:

and

to compute the moment of inertia for a shape about a specified axis.

The moment of inertia for a rectangle