1. The problem statement, all variables and given/known data http://img28.imageshack.us/img28/7118/capturenbc.jpg [Broken] 2. Relevant equations x2 + y2 + z2 = p2 http://img684.imageshack.us/img684/3370/eq0006m.gif [Broken] 3. The attempt at a solution Using the relevant equations I converted the given equation to: ∫∫∫e(p3/2) * p2 * sin(∅) dp dθ d∅ Then the bounds of the first integral, dp, would be from 1 to 2, because of the radius of the spheres. I cannot figure out what the bounds for the second and third integrals would be though. Thanks for your help!