WEBVTT

1
00:00:00.000 --> 00:00:05.155
Here is the problem: The perimeter of a square is 36. What is its side length?

2
00:00:05.605 --> 00:00:07.915
A square with perimeter 36.

3
00:00:08.715 --> 00:00:12.755
Read the problem. Square, perimeter P equals 36.

4
00:00:13.205 --> 00:00:16.642
Side. s equals P / 4 equals 9.

5
00:00:17.092 --> 00:00:20.691
Area. A equals s squared equals 81.

6
00:00:21.491 --> 00:00:27.006
So the answer is Side equals 9 units; area equals 81 square units.

7
00:00:27.456 --> 00:00:32.889
Area counts square units inside the shape; perimeter is the distance around it.

8
00:00:33.690 --> 00:00:37.382
4 times 9 equals 36, which checks out.