00:01
Compute the area in the circumference of the circle shown below.
00:05
Round your answer to two decimal places.
00:07
So to find the area of a circle, i need to use a formula pi times radius squared.
00:12
To find the circumference of a circle, because i'm given the radius, i can use the formula 2 times pi times the radius.
00:20
So i'm going to find the area first.
00:24
So i'm just going to move this formula over.
00:31
So circumference equals 2 times pi times the radius.
00:34
So for the area, i'm going to do area equals pi times two squared.
00:41
So area equals two squared is four.
00:44
So pi times four.
00:46
So i'm going to use 3 .14 for pi and multiply it by four, which is 12 .56...