This is the power of the definite integral. So we could just integrate from x equals zero to x equals two from x equals zero to x equals two. If you drew where these intersect our base, you would say, all right, this thing right over here would be this thing right over here, where it's dx. Instead of just multiplying dx times the difference between these functions, we're going to square the difference of these functions because we're visualizing this three-dimensional shape, the surface area of this three-dimensional shape as opposed to just the height of this little rectangle. And if you were to evaluate this integral, you would indeed get the volume of this kind of pedestal horn-looking thing. This is not an easy definite integral to evaluate by hand, but we can actually use a calculator for that. And so we can hit Math and then hit choice number nine for definite integral.