Question

the perimeter of square in 20cm.find its area

Answer 1

area of the square = side * side
                              = 20 * 20
                              = 400 square cm

Answer 2

25cm sq.
Method

Perimeter of square= 4 x side
             20cm= 4x side
             side= 20/4=5
Area of square= sidex side
                         = 5x5
                         =25cm sq.