Since a square has four sides of equal length, each side is 12/4 or 3 feet long. To find area, multiply length times width, which in a square is the same number. Area = 3 x 3 = 9 square feet. Remember area is always square units.
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The area of a square that has a perimeter of 12 feet is: nine square feet.
To find the area of a square with a perimeter of 12 feet, we first need to determine the length of one side. Since a square has four equal sides, we divide the perimeter by 4 to get each side length, which is 3 feet. To find the area of the square, we square the length of one side, so the area would be 3 feet x 3 feet = 9 square feet.
If the area of a square is 12 the perimeter is: 13.86
Perimeter is 12, so each side would be 3 feet. Area is L X W, so that would be 9 ft2.
The maximum area is attained when the rectangle is, in fact, a square. Since the perimeter = 48 feet, the maximum length for a square = 48/4 = 12 feet. So max area = 122 = 144 square feet.