12 feet (4 sides x 3' = 12')
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There are two equations that need to be known for this. The first is that the perimeter of a square is 4 times the side length. So in this case the perimeter is twelve feet, we know that the side length must be 3 feet. The other equation is that the area of a square is the side length squared. So in this case, the side length is 3 feet, so the area is 9 feet2
Each side measures nine inches.
The perimeter of a square is calculated by the formula ( P = 4s ), where ( s ) is the length of one side. If the perimeter is 3 feet, then each side is ( s = \frac{3 \text{ feet}}{4} = 0.75 \text{ feet} ). Since there are 12 inches in a foot, ( 0.75 \text{ feet} \times 12 \text{ inches/foot} = 9 \text{ inches} ). Therefore, each side of the square is 9 inches long.
It is: 12/4 = 3 feet
A square with an area of 1/3 acre measures 120.5 feet on each side with a perimeter of 482 feet.