144 inches.
The perimeter of the square is 40 inches.
perimeter sqare= L+L+L+L = 4L == == == == == == L=lentgh
A squares sides are equal in length. The answer is 4*5"=20".
144
The area would be 81 square inches.
306ft2 (1yd / 3ft)2 --> 306/9 = 34yd2
3Ft.
Square feet and yards measure different things. A square foot is a measure of area but a yard is a measure of length. Asking this is like asking "how many inches are in a pound?" If you mean "how many square feet are in a square yard?", the answer is 9.
Assuming that you want the perimeter of a square, then the answer is 4*length of a side.
If the perimeter is already measured in inches, there is nothing to convert. There are 18 inches in a perimeter of 18 inches.
5400 sq ft
If one of the sides is 8 feet, the perimeter is 32 feet and the area is 64 square feet.