So that gives you an idea of what it looks like. But we still haven't thought about how do we actually find the volume of this thing. Well, what we can do instead of creating disks where the depth is in little dx's, what if we created disks where the depth is in dy's? So let's think about that a little bit. So let's think about constructing a disk at a certain y value. So let's think about a certain y value. We're going to construct a disk right over there that has the same radius of the shape at that point.