### Home > CC1 > Chapter 6 > Lesson 6.2.4 > Problem 6-106

6-106.

Find the perimeter and area of each figure made of algebra tiles below. Homework Help ✎

Remember, the small square is a unit tile, which is a 1 × 1 square.

The dimensions have been placed on the algebra tiles for you.

4*x* + 4 units

Looking at the algebra tiles below, do you understand why the length of one side is labeled *x* − 1?

Since part of the side with length *x* touches the unit tile, the side that is included in the calculation of the perimeter is *x* − 1.

Refer to parts (a) and (b).