So it has a height of 13 4ths, and then a width of one, so times one, would just give us 13 4ths. So plus 13 4ths, which would give us 23 over four, which is the same thing as 5 3 4ths. And so this is often known as a midpoint approximation, where we're using the midpoint of each interval to define the height of our rectangle. But this isn't the only way to do it. We could look at the left endpoint or the right endpoint, and we do that in other videos. And then if we wanna do it just for kicks here, let's just do that really fast. So if we wanna look at the left endpoints of our interval, well, here our left endpoint is negative one.