Question

I need help, please help me

Answer 1

See below.

Explanation:

The perimeter of a rectangle is simply the distance around the rectangle. The distance will be its two lengths plus the two widths. In other words:

`P=2l+2w`

We want to solve for l. Therefore:

`P=2l+2w\\2l+2w=P\\2l=P-2w\\l=(P-2w)/2`