The sum of the perimeters of a square and a rectangle is 120 metres. If the sum of the length and breadth of the rectangle is 30 cm, then find the area of the square.
Perimeter of the rectangle = 2 x 30 = 60 cm Perimeter of the square = 120 – 60 = 60 cm Each side of the square = 60/4 = 15 cm Therefore, area of the square = 152 = 225 cm2
