1. The problem statement, all variables and given/known data 2. Relevant equations V = (1/3) * A * H [Volume of Pyramid] 3. The attempt at a solution The first thing I did was to calculate the height of pyramid from the volume formula. I got a perpendicular height of 15. I'm not sure where to go from there. I'm under the impression that average height has something to do with geometric center. I researched the topic and found something about Pappus Theorem, and that the center of mass is 3/4 of the way from the vertex to the mid point of the base. Using that I come up with an average height of 3.75, but I'm not certain if that number is correct or if it even represents average height. I found a related problem online, but it involved things that I have not discussed in class and I had trouble following along. I would really appreciate some guidance. I'd like to know if my answer of 3.75 is correct, and how I would go about solving this using multivariable calculus.