Question

the area and perimeter of a square whose side is 13 centimetre

Answer 1

area of square=a*a
=13*13=169 cm ^2
perimeter =4*a=4*13
=52cm

Answer 2

side  = 13 cm
area = side ^2
       =13*13
         =169 cm^2
perimeter = 4 * side
                 =4*13=52 cm