Question

A farmer has 400 feet of fencing she would like to use to make a rectangular enclosure. She would like to maximize the area of the enclosure. The graph below shows the square footage of the enclosure,

depending on the length of it.
Enclosure with 400-foot Perimeter
12,000
10,000
8,000
Area (square feet)
6,000
4,000
2,000
0
200
50 100 150
Length of Enclosure (feet)

Answer 1

100 feet would make the enclosure the longest

Explanation:

The graph shows that at 100 feet the line is at its highest point.