The expression 4
⋅81−−√
gives the perimeter of the square shown. What is the perimeter, in meters, of the square?
A square with area, A, equal to 81 square meters.
To find the perimeter of the square, we first need to find the length of one side. Since the area of the square is 81 square meters, we can find the length of one side by taking the square root of the area:
Side length = √A
Side length = √81
Side length = 9 meters
Now that we have the length of one side, we can find the perimeter by multiplying it by 4:
Perimeter = 4 * Side length
Perimeter = 4 * 9
Perimeter = 36 meters
Therefore, the perimeter of the square is 36 meters.