Using disc method, how to find the volume of the solid generated when the region bounded by $y^2 = x$ and the line $x = 2y$ is revolved about the line $y = -2$?
So far, I have obtained the bounds $(0,2)$ from $y^2 = 2y$ and the distance $y^2 + 2$ from $|y^2 - (-2)|$ but I am not sure if what I obtained is correct