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## Homework Statement

Question Reads: A circular disk x ^2 + y^2 <= a ^ 2 , a > 0 is revolved about the line x = a.

Find the volume of the resulting solid.

## Homework Equations

v = integral(a, b) (2pi)y [F(y) - G(y)] dy

## The Attempt at a Solution

Im currently confused, should i take intergral with respect to x or y?

and what does this x = a tell me ?

does it just mean integral from (0, a)