1. The problem statement, all variables and given/known data http://i45.tinypic.com/hwcsy0.png 3. The attempt at a solution I'm not sure how to find the rest; Ixy, Iyz and Izx... Usually for integrals such as moments of inertia you will be able to reduce it to only one variable. However, there are 2 variables here; xy, yz and zx. How do i reduce it to only one?