00:01
So if you notice your picture in the book, that fish covers the total distance across the grill.
00:06
Well, we're told the length of that fish was 18 inches.
00:09
So in other words, the diameter of this grill is 18 inches.
00:13
Well, we're being asked to find the area.
00:16
Well, how do we find the area of a circle? well, the area is equal to pi r squared, which means we need the radius.
00:24
Well, remember, the diameter is two times the radius.
00:28
So if the diameter is 18, we can find.
00:30
The radius simply by dividing by 2.
00:33
So we've found the radius will equal to 9.
00:36
So now we simply need to substitute 9 in for r in our equation...