And how do we figure that out? Well, this is a semicircle, and we know how to find the area of a circle if we know its radius, and this circle has radius two, has a radius of two. No matter what direction we go in from the center, it has a radius of two. And so the area of a circle is pi r squared, so it'd be pi times our radius, which is two squared, but this is a semicircle, so I'm gonna divide by two. It's only half the area of the full circle. So this is going to be four pi over two, which is equal to two pi. All right, let's do another one.