Im working on a problem involving a 70 lb empty drum. The diameter and length are given. Im trying to find if it will float stably if placed upright in water. I did a similar problem to this involving a solid cylinder with no problem. But im trying to figure what special considerations or differences I need to take into account to get the correct answer. Im calculating the metacenter and the center of gravity as I did in the last problem but Im not coming up with the correct answer for this problem involving the hollow cylinder. Just trying to see what parameter I need to take into account.