Question

If the perimeter of a square is 64mm then how long is each side?

Answer 1

perimeter=l+l+w+w=64
64/4=16
so each side is 16 mm long

Answer 2

perimetr=4*side, so we know perimetr =64mm
so 4*side=64mm
side=64/4mm
side=16mm
Answer: side is 16 mm