Question

A rectangle is twice as long as it is wide. Its perimeter (the sum of the lengths of its sides) is 84 cm. Find its length and width (in cm).

Answer 1

_______________
|. |
X. |. |
|
|_______________
2x

X +x+2x+2x=84
6x=84
X=14

Width 14 cm
Length 28 cm