Between x is equal to 0 and x equals 2, and we're going to take the sum of all of these, the volumes of all of these coins, but the limit as the depths get smaller and smaller and smaller and we have more and more and more coins, at the limit we're actually going to get the volume of our cone or our bugle or whatever we want to call it. So if we just evaluate this definite integral, we have our volume. So let's see if we can do that. So now this is just taking a standard definite integral. So this is going to be equal to, and I encourage you to try it out before I do it. So we could take the pi out. So it's going to be equal to pi times the integral from 0 to 2 of x to the fourth dx.