00:01
We need to find the area of the shaded region.
00:04
So first notice that if we combine these two semicircles, it creates a full circle.
00:09
And this shape is going to be a square because this radius would also be three.
00:17
This radius would be three.
00:19
So it means this side is six.
00:22
So to find that shaded part, we need to first find the area of the square, area of square.
00:32
And then subtract the area of the circle.
00:39
But notice it's not saying to find both empty spaces.
00:44
It's just asking for half.
00:46
So we need to divide that by two.
00:49
So first let's find the area of the square, which is six times six.
00:54
So that's going to be 36.
00:57
Now for the area of the circle, we have area equals pi r squared...