What's the formula to find the width

2l + 2w = p

If you already have perimeter and length, you can use this formula to solve for width.

Area = length x width

Step-by-step explanation:

width of a rectangle, use the formula: area = length * width. Just use the area and length of the rectangle and the formula and answer for the width. If you don't have the area, you could use the rectangle's perimeter.