# Section C: Practice Problems Find Area of Figures Composed of Rectangles

## Section Summary

Details

In this section, we found the area of figures that could be decomposed into rectangles. We added the area of each rectangle to find the area of the entire figure.

We also found missing side lengths by using what we know about opposite sides of rectangles.

## Problem 1 (Lesson 12)

What is the area of this figure in square units? Explain or show your reasoning.

## Problem 2 (Lesson 13)

Find the area of this figure. Explain or show your reasoning.

## Problem 3 (Lesson 14)

Find the area of this figure. Explain or show your reasoning.

## Problem 4 (Exploration)

Lin says that she knows how to find the area of the figure. Diego says there is not enough information to find the area.

Do you agree with Lin or with Diego? Explain your reasoning.

## Problem 5 (Exploration)

1. Each image shows part of a shape filled with squares.

For each image, which do you think is greater, the number of squares in the image or the number of squares missing in the middle?