1. Objective: find the area of geometric figures and shaded regions. What area formulas must be memorized?

2.  The amount of 2-dimensional space an object takes up  Measured in “square units” cm 2, ft 2, in 2

3. 7 in 10 in

4. 5 cm 2 cm

5. 9 cm 7 cm

6. 8 cm 6 cm 70 °

7. 18 ft 20 ft 6 ft

8. 8in

9. 30 ° 2in

10. Area of outside shape – Area of inside shape The circle below has a radius of 8, and the square has sides of length 5. Find the area of shaded region

11. 12 cm 9 cm 108 cm 2

12. 36 m The perimeter of the rectangle is 126 m. Find the area. 972 m 2

13. 24 cm 30 cm 360 cm 2

14. 5 ft 3 ft 7.5 ft 2

15. 22 ft 18 ft 15ft 27 ft 5. The area of the obtuse triangle is 1765. The area of the obtuse triangle is 176 A = 165 ft 2

16. A = 11.13 m 2

17. A = 35.95 in 2

18. A = 17.78 cm 2

19. A = 22.4 ft 2

20. 6 cm 10 cm 9 cm 72 cm 2

21. 11 m 25 m 13 m 12 m A = 216 m 2

22. 5 in A=25 ∏ or 78.5

23. 7 cm A=12.25 ∏ or 38.5

24. Find the area of the shaded sector:

25. Find the area of the shaded sector

26. Find the area of the shaded region

27. 42.06