Answer:
length = 7 units
width = 13 units
area = 91 square units
perimeter = 40 units
Explanation:
What is the area of a rectangle?
 ❖ The area of a rectangle can be found by multiplying the length and
 width of the rectangle.
What is the perimeter of a rectangle?
 ❖ The perimeter of a rectangle is the sum of all sides- length and 
 width. In this case, we're given the perimeter as 40 units and the
 length as 7 units, but the width is unknown. Formula to find
 perimeter of rectangle is 2(l + w) = P.
Solving for Width
Solving for Area
   
- 91 square units