Question

The side of square is 3.9 cm. find its perimeter

Answer 1

p=4s
=4(3.9)
=15.6 cm

Answer 2

the perimeter of a square is sum all sides or 4 x side

side = 3.9 cm

perimeter = 3.9+3.9+3.9+3.9

                =15.6cm