The area of a square tray is 81 square inches.
Find the length of a side of the tray
Answer
Find the perimeter of the tray.
Answer
To find the length of a side of the tray, we can take the square root of the area:
√81 = 9
So the tray has sides that are each 9 inches long.
To find the perimeter of the tray, we can add up the length of all four sides:
Perimeter = 4 x length of one side
Perimeter = 4 x 9
Perimeter = 36
So the perimeter of the tray is 36 inches.