So let me highlight this trapezoid in red. So we wanna find the area of this trapezoid right over here. And then that should be equal to one because all density curves have an area of one under the total curve. So let's first verify that. So there's a couple of ways to think about it. We could split it up into two shapes or you could just use the formula for an area of a trapezoid. In fact, let's use the formula for an area of a trapezoid.