00:01
Okay, so the simplest strategy for finding the area of shaded regions that have a hole in then, let's say, is to just find, just pretend that it's a filled in circle and find the area of like this circle, right, the whole thing.
00:26
And then pretend there's the hole in it later and just calculate the area of the whole.
00:33
And then just subtract that off.
00:36
So let's do that.
00:37
We know that the area of a circle is equal to pi times the radius squared, right? squared.
00:47
And for the big circle, that is a radius of 24 meters.
00:53
So that's pi times 24 squared meters.
01:01
So the area of the big circle is 576 meters.
01:07
576 pi meters squared.
01:11
Now we have to find the area of the small circle...