Recent content by ryantc

Thanks, I think I got the idea here, when I set z=0 I get the sphere on xy plane together with the cylinder to find the range of r, But I just forget the lower half, that's where the 2 times comes from . :(

Homework Statement 1. Use polar coordinates to find the volume of the given solid. 2. Inside the sphere x^2 + y^2 + z^2 = 16 and outside the cylinder x^2 + y^2 = 4. 2. The attempt at a solution My attempt as following: 2<=r<=4, and 0<=theta<=2pi So I do a double integral of...