Area ofIrregular Figures

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Area of Irregular FiguresMethod #1

1. Divide the figure into smaller figures (that you know how to find the area of)

2. Label each small figure and find the area of each

3. Add the areas

4. Label your answer

Example:Find the area of the figure.

10 m

6 m

3 m2 m

10 m

6 m

3 m2 m #1

#2

Area of Irregular FiguresMethod #2

1. Create one large, closed figure.

2. Label the small added figure and find the area.

3. Find the area of the new, large figure

4. Subtract the areas

5. Label your answer

Example:Find the area of the figure.

10 m

6 m

3 m2 m

10 m

6 m

3 m2 m Whole Rectangle Extra Rectangle

Try These:Find the area of each figure.

2m

4m

2m

5m

20 ft

16 ft

8 ft

10 ft

96 Find the area.

4'

2.5'

1.5'

2.5'

8.75'

7.75'

5.25'

Top Rectangle

Bottom Rectangle

Vertical Rectangle

Total Area

97 Find the area. Whole New Figure

New Rectangle

Total Area

16

121925

35

13

98 Find the area. Triangle

Rectangle

Total Area

8 cm 58 cm

15 cm

99 Find the area.4 ft.

9 ft.

5 ft.

6 ft.

Side Rectangle

Bottom Right Rectangle

Total Area

Half Circle