Find the missing letter which is n. perimeter is 108 inches and width is 18 inches

The perimeter can be found by using the formula: P = 2w + 2h

w = width

h = height

P = perimeter

We are given the perimeter of 108 inches.

We are given the width of 18 inches.

Substitute in the formula.

108 = 2 (18) + 2h

108 = 36 + 2h

Solve for h.

108 = 36 + 2h

108 - 36 = 36 - 36 + 2h

72 = 2h

72/2 = 2h/2

36 = h

Therefore, the length of the missing side is 36 inches.

Best of Luck!