1. The problem statement, all variables and given/known data The region in the first quadrant bounded by the lines y=4 and x=2 and the curve x^2=4y is revolved about the y-axis. Find the volume: a) by the method of washers b) by the method of shells 2. Relevant equations 3. The attempt at a solution I drew the region, and I can picture what the solid volume would look like. I think the limits of the integral are 0 and 4, if I'm not mistaken. Also, for the washer method, I need the inner and outer radius. I think the outer radius is x^2/4, but I'm not sure what the inner radius would be. As for the shell method, I think the radius would be 4 and the height, I'm not so sure about. Any help is appreciated. Thank you so much.