[SOLVED] Centroid Parabolic area 1. The problem statement, all variables and given/known data http://img227.imageshack.us/img227/7518/slowge9.th.jpg [Broken] Find the centroid of the area. 2. Relevant equations 3. The attempt at a solution I'm not quite sure what I'm screwing up on this problem, I can do other problems like when y = x^2. I have only shown my work for the x centroid, but I can't seem to get the answer (3/8b). Does anyone see where I messed up, I assume it's somewhere in the integral setup. I think dA = h-y dx is correct.