perimeter of a rectangle

Question

the perimeter of a rectangle is 104m. the length is 4m more than twice the width. What is the length and what is the width?

Answer 1

Let the width be x meters.
The length will thus be 2x + 4 meters.

Since the perimeter is 104 meters, we have:

Perimeter = length + length + width + width
104 = 2x + 4 + 2x + 4 + x + x
104 = 6x + 8
6x = 104 - 8
6x = 96
x = 96 / 6
x = 16 meters

Width = x = 16 meters
Length = 2x + 4 = 2(16) + 4 = 36 meters

Answer 2

the perimeter of a rectangle whose  is 3 less then five times its width?

Answer 3

the perimeter of a rectangle is 34 inches, and the diagonal measures 13 inches.  What are the length and the width of the rectangle?