### Home > CALC > Chapter 5 > Lesson 5.2.2 > Problem 5-69

5-69.

First get an equation for the length of the barbed wire in terms of one variable.

Let the Length of the detention chamber be *x* and the width be *y*.

40 = *xy* *L* = 4*y* + *x*

Refer to problem 5-39 for more guidance.