Perimeter is the sum of all the length of each side of a shape. Square has 4 equal sides. Perimeter of a square = Length + Length + Length + Length Let L= the length of each sides of the square. 28=L+L+L+L 28=4L Divide both sides by 4 to get the length of the square. L=
28
4
=7cm Area of a square = Length x Length Area =7cm×7cm=49cm2