Question

The perimeter of the rectangle is 28 units.
What is the value of w?
​

Answer 1

answer is w = 14

Answer 2

Explanation:

The formula of a perimeter of a rectangle:

`P=2l+2w`

We have P = 28. Substitute:

`28=2l+2w`

Solve for w:

`2l+2w=28` subtract 2l from both sides

`2w=28-2l` divide both sides by 2

`w=14-l`

Where
`0<l<14`