1. The problem statement, all variables and given/known data find the area of the surface defined by x2+y2=y, with yE[0,4] 3. The attempt at a solution I tried setting it up with cylindrical coordinates, but it doesn't work. Why? ∫40∫2pi0r*dθ*dy, where r=√y Is it because my height, dy, has a vertical direction while its direction should be in the direction of the conic wall?