Find the perimeter of the square . Include units in your answer 9in 9 in

36
81
45
18in

36 inches

Explanation: The perimeter of a square is equal to the sum of all four sides. Since all sides of a square are equal, the perimeter is equal to 4 times the length of one side. Therefore, the perimeter of a square with side length 9 inches is 4 * 9 inches = 36 inches.