Recent content by booker

Homework Statement Consider the circle D on the plane with the center (2,0) and radius r=1. Revolving D about the y-axis, we obtain a donut (torus). What is the volume of this donut? Homework Equations Assume: F(x)=\int^{a}_{-a} sqrt(a^2-u^2)du = (PI * a^2 )/2 where a\geq0...