1. Slide 1 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Area, Volume, and Surface Area Section9.3

2. Slide 2 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Finding Areas of Geometric Figures Area Formulas of Common Geometric Figures Rectangle width length Area = length · width A = lw Square side Area = side · side A = s ·s = s 2

3. Slide 3 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Finding Areas of Geometric Figures Area Formulas of Common Geometric Figures Triangle Parallelogram Area = base · height A = b · h

4. Slide 4 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Finding Areas of Geometric Figures Area Formulas of Common Geometric Figures Trapezoid

5. Slide 5 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the area of a triangle. 6 yds 5 yds

6. Slide 6 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the area.

7. Slide 7 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the area. 5 m 9 m 4 m

8. Slide 8 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Circles Area Formula of a Circle radius

9. Slide 9 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the area of the circle. 2 cm

10. Slide 10 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Formulas

11. Slide 11 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the volume. 4 cm 8 cm

12. Slide 12 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Find the surface area. 4 cm 8 cm

13. Slide 13 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Formulas

14. Slide 14 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Formulas

15. Slide 15 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Approximate the volume of the ball with a 3 inch radius. Use the approximation Give an exact answer and an approximate answer. Exact Approximate

16. Slide 16 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Finding Formulas Solids

17. Slide 17 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Approximate the volume of the can. Use Give an exact volume and an approximate volume. Exact continued

18. Slide 18 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Formulas

19. Slide 19 Copyright © 2015, 2011, 2008 Pearson Education, Inc. Example Approximate the volume of the cone. Use Give an exact answer and an approximate answer. Approximate continued

20. Slide 20 Copyright © 2015, 2011, 2008 Pearson Education, Inc. continued Approximate the volume of the cone. Use Give an exact answer and an approximate answer.