### Home > CC3MN > Chapter 3 Unit 3 > Lesson CC3: 3.1.6 > Problem 3-59

3-59.

Write an expression that represents the perimeter of the shape built with algebra tiles at right. Then find the perimeter if units and

*units.*

Find the length of each side, and then sum the lengths.

Once you find an expression for the perimeter, substitute and

*.*