00:01
So in this problem, we're being asked to find the amount of four area covered by a circular throw rug that has a radius of 15 inches.
00:09
We're going to make sure that we round to the nearest square inch, meaning the nearest whole number.
00:13
So in this case, they're asking us for the area when the radius is 15 inches.
00:18
Well, how do we find the area of a circle? well, the formula is a equals pi r squared.
00:25
So to find the area, which we don't know, we simply need to substitute 15 in for r.
00:30
So we're going to have pi times 15 squared.
00:34
And now we simply need to evaluate.
00:36
Well, 15 squared means 15 times 15, which is equal to 225.
00:41
And now we need to multiply by pi.
00:44
Now, the direction say you can either use 3 .14 for pi if your calculator does not have a pie button...