1. Unit 5 – Composite Area Notes

2. Unit 5 – Composite Area Notes
Find the area of the polygon.
Think: Break the figure apart into a rectangle and a triangle.
Find the area of each polygon.

3. Find the area of the polygon.
Think: Break the figure apart into a rectangle and a triangle.
Find the area of each polygon.

4. A = bh 1 2 __
A = bh
A = • __ • __ 1 2 __
A = __ • __
A = ____
A = ___
Add to find the total area of the polygon.
___ + ___ = ___
The area of the polygon is ____ ft2.

5. A = bh 1 2 __
A = bh
A = • 28 • 12 1 2 __
A = 28 • 24
A = 168
A = 672
Add to find the total area of the polygon.
= 840
The area of the polygon is 840 ft2.

6. Find the area of the polygon.
Think: Break the polygon apart into rectangles.
Find the area of each rectangle.

7. Find the area of the polygon.
1.7 cm
4.9 cm
1.3 cm
2.1 cm
Think: Break the polygon apart into rectangles.
Find the area of each rectangle.

8. 1.7 cm
4.9 cm
1.3 cm
2.1 cm
A = bh
A = bh
Write the formula for the area of a rectangle.
A = ___ • ___
A = ___ • ___
A = ____
A = ____
____ + ____ = _____
Add to find the total area.
The area of the polygon is _____ ____.

9. 1.7 cm
4.9 cm
1.3 cm
2.1 cm
A = bh
A = bh
Write the formula for the area of a rectangle.
A = 4.9 • 1.7
A = 2.1 • 1.3
A = 8.33
A = 2.73
= 11.06
Add to find the total area.
The area of the polygon is cm2.