Recent content by astroboy999

Well, don't I want to average over the interval [-r, r]? But maybe I needed the factor of \frac{1}{2r}, instead of \frac{1}{r}. Is that correct?

Homework Statement Given a sphere of radius r, what is the average area of a cut given by a random plane meeting the sphere? The Attempt at a Solution I just need someone to check my answer, and maybe suggest an alternative solution if there is a better one. I assumed that the cut is...