If you're like me and look at other examples for help:
I was using the wrong eq. use I=(1/12)mL^2 + m (L/2 -d)^2
L is the length of the door and d is the distance from the edge
A 24 kg solid door is 220 cm tall, 95 cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 17 cm from one edge?
I've looked at examples of how to do this problem. They connect it to center mass but I get confused when determining what the center mass...