A square has equal length sides, so each side is 13 in. The perimeter is the distance of the 4 sides added together. The perimeter is: 13 + 13 + 13 + 13; which is 52 in.
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Since a square has four sides, divide the perimeter by four:2.25 / 4 = 0.5625 per side
Square is a special case of a rectangle and the same formula may be used to find the perimeter
divide the perimeter by four to get the length of one side then square your answer to find the area
you have to have a shape first ex. square the square has a perimeter of 15 ft2 if it was a small sqaure
you find it by adding up the numbers of cm " in a square