Question

The length of a rectangle is twice its width. The perimeter is 60 ft. Find its area.

Answer 1

These problems give you the relationship of the sides and the perimeter.
here let x = width, then 2x = length, because length is twice the width. The perimeter is 60 ft and is the sum of the four sides.
2x +4x = 60 ft
6x= 60 ft
x = 10 ft.
2x =20 ft
The rectangle is a 10 x 20 ft rectangle