The length of a Rectangle is twice the width find the width if the perimeter is 60 cm

Perimeter = 2 (length+width)

60 = 2 (l+w)

l=2w

Substitution method

60 = 2 (2w+w)

60 = 2 (3w)

30 = 3w

10 = w

Plug the value of w in.

l = 2 (10)

l=20

Final answer: Length = 20, width=10