Author: mark_cameron
Last saved by: Glencoe Mathematics
Company: McGraw-Hill

Lesson 7-3

Example 1 Find the Area of a Composite Figure
Find the area of the composite figure.

The figure can be separated into a square and a triangle.

Area of square	Area of triangle
A = s^2	A = 1/2bh
A = 10^2	A = 1/2 · 10 · 6
A = 100	A = 30

The area of the figure is 100 + 30 or 130 square feet.

Example 2 Real-World Example
DESIGN The proposed design for the logo of
Sam’s Sno-Cone Shop is shown at the right. What
is the area of the design?

The figure can be separated into a semicircle and a triangle.

Area of semicircle	Area of triangle
A = 1/2πr^2	A = 1/2bh
A = 1/2 · π · 2^2	A = 1/2 · 4 · 3.5
A ≈ 6.3	A = 7

The area of the design is about 6.3 + 7 or 13.3 square inches.