The perimeter of a rectangular driveway is 58 feet . The driveway is 20 feet long. How wide is it?

Question

The perimeter of a rectangular driveway is 58 feet . The driveway is 20 feet long. How wide is it?

Answer 1

If 58 is the perimeter and the formula for perimeter is 2(length)+2(width), and 20 is the length, then 2(20)+2(width)=58. So the width would be 9 when you solve for width in the equation.

40+2w=58

2w=58-40

2w=18

w=9

Answer 2

Hi. Well your rectangular driveway has two lengths and two widths. If one length is 20 feet, then the other length is also 20 feet. So together the lengths total 40 feet. If the perimeter(distance all the way around ) of your driveway is 58 feet, that leaves you with 18 feet left for the two widths (58-40=18). So each width is 9 feet. (18 / 2 = 9)

Greg D.