### Home > CC3MN > Chapter 5 Unit 6 > Lesson INT1: 5.1.3 > Problem 5-38

5-38.

Solve the problem below by defining a variable and then writing and solving an equation.

The perimeter of a triangle is

Refer to the Math Notes box in Lesson 1.1.3 to review the 5-D Process.

Side #1

Side #3

Make sure the sides sum to

Side #1

What is the length of Side #3?