you are likely already familiar with finding the area between curves, and in fact, if you're not, I encourage you to review that on Khan Academy. For example, we could find this yellow area using a definite integral. But what we're going to do in this video is do something even more interesting. We're gonna find the volume of shapes where the base is defined in some way by the area between two curves. And in this video, we're gonna think about a shape, and I'm gonna draw it in three dimensions. So let me draw this over again, but with a little bit of perspective. So let's make this the y-axis.