1. copyright©amberpasillas2010 Area of Irregular Figures

2. Area of Irregular Figures Estimate the area of the circle using the centimeter grid below Estimate 16 4 4 4 4 1.5 3 3 3 + 4(4)+ 4(1.5)+ 4(3) 16 + + 6 +12 r = 4 1.5 r = 4

3. copyright©amberpasillas2010 Area of Irregular Figures Estimate the area of the circle using the centimeter grid below Estimate 16 4 4 4 4 1.5 3 3 3 + 4(4)+ 4(1.5)+ 4(3) 16 + 16 + 6 +12 r = 4 1.5 r = 4 then find the area using Formula Close

4. copyright©amberpasillas2010 Area of Irregular Figures Find the area. A method of estimating the area of an irregular figure is to count the number of squares the figure covers. Count the full squares: Count the half-full squares: Calculate how many half squares put together make full squares The area of the figure is 15 square units. 11 8 4 11 + 4 = 15

5. copyright©amberpasillas2010 Area of Irregular Figures Find the area. A method of estimating the area of an irregular figure is to count the number of squares the figure covers. Count the full and almost-full squares: Count the half-full squares: Calculate how many half squares put together make full squares. The area of the figure is about 14 square units. 11 6 3 11 + 3 = 14

6. copyright©amberpasillas2010 Area of Irregular Figures Find the area. A method of estimating the area of an irregular figure is to count the number of squares the figure covers. Count the full squares: Count the half-full squares: Calculate how many half squares put together make full squares The area of the figure is 12 square units. 10 4 2 10 + 2 = 12 GIVE ME A THUMBS UP WITH YOU KNOW THE ANSWER!

7. copyright©amberpasillas2010 Area of Irregular Figures Find the area of each figure. 1. 2. 8 square units approximately 12 square units GIVE ME A THUMBS UP WITH YOU KNOW THE ANSWER! A method of estimating the area of an irregular figure is to count the number of squares the figure covers.

8. copyright©amberpasillas2010 Area of Irregular Figures Find the area of each figure. 1. 2. GIVE ME A THUMBS UP WITH YOU KNOW THE ANSWER! approximately 5 square units approximately 6 square units

9. copyright©amberpasillas2010 Take our your STUDY GUIDE THE END!!! Area of Irregular Figures

10. copyright©amberpasillas2010 Parallelogram Trapezoid Triangle Rectangle A= Base x Height A= (Base 1 + Base 2 ) x Height A= (Base x Height) h b A= Base x Height h b 2 2 Square A= Side x Side s s # 9 b1b1 b 2 b h h