Let L be the line determined by the equations y = 4, x = 4z. If we rotate L around the x-axis, we get a surface whose equation is Ax2 + By2 + Cz2 = 1, where
A=______ ,B =______, C = ______
Hint: Pick a point on the line and rotate it around the x-axis...you will get a circle. Think about how the radius of that circle changes as the point changes.