### Home > PC3 > Chapter 12 > Lesson 12.2.1 > Problem 12-107

12-107.

A rectangular pen is to be constructed with three sections as shown in the diagram at right. If the total amount of fencing available is

Label the diagram.

Write an equation for the perimeter and the available .

Write an equation for the area in terms of and

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Substitute the expression for from the perimeter equation into the area equation.

Use your calculator to graph the area function.