The perimeter of a standard-sized rectangular rug is 28 ft. The length is 2 ft longer than the width. How do you find the dimensions. What is the width?

1 Answer
Nov 28, 2016

The dimensions are 6 feet by 8 feet and the width is 6 feet.

Explanation:

The formula for the perimeter of a rectangle is:

p = 2*w + 2l where p is the perimeter, w is the width and l is the length.

We are told the length is 2 ft longer than the width. So, we can write this as:

l = w + 2

We are also given the perimeter or p.

So substituting 28 for p and w + 2 for l we can rewrite this formula as follows and solve for w while keeping the equation balanced:

28 = 2*w + 2*(w + 2)

28 = 2w + 2w + 4

28 = 4w + 4

28 - 4 = 4w + 4 - 4

24 = 4w

24/4 = (4w)/4

w = 6

We can number substitute 6W for w in the equation for l# to determine the length:

l = 6 + 2

l = 8