Question

The length of a rectangle six times it’s width is the perimeter of the rectangle is 70 feet find its area

Answer 1

A = 150 feet

Explanation:

perimeter of rectangle = 2w + 2l

l = 6w

70 = 2w + 2(6w)

70 = 2w + 12w

70 = 14w

w = 70/14

w = 5

l = 6 x 5 = 30

area = l x w

A= 30 x 5 = 150 feet

don't forget the units

Answer 2

Let w be the width. Length is 6w

Perimeter is 70 m

so w + w + 6w + 6w = 70

w = 70/14 = 5, l = 30m.

Area = l * w = 30 * 5 = 150