12-3 Composite Figures

Area of Composite Figures

Chapter 12 Lesson 3

What are composite figures?

• A composite figure is made up of to or more shapes!

• To find the area of a composite figure, you need to find the area of the individual shapes and ADD them together!

What are those area formulas again?

• Check out the table to the right! :)

• 1) Parallelogram

• 2) Triangle

• 3) Trapazoid

• 4) Circle

Notes Example

• Find the area of the composite figure -->

• Step 1: Triangle

• A = 1/2bh

• Step 2: Rectangle

• A = lw

• ANSWER: 453 square inches

Multiple Choice

Find the area of the composite figure.

• 30 square feet

• 210 square feet

• 180 square feet

Multiple Choice

Find the area of the composite figure.

• 430 square feet

• 500 square feet

• 360 square feet

Multiple Choice

Find the area of the composite figure.

• 36 square inches

• 71 square inches

• 42 square feet

Multiple Choice

Find the area of the composite figure.

• 100.26 square feet

• 86.13 square feet

Multiple Choice

Find the area of the composite figure.

• 90.13 square yards

• 78.13 square yards

• 238.42 square yards

Multiple Choice

Find the area of the composite figure.

• 220.48 square cm

• 320.96 square cm

• 239.56 square cm