Homework Answers P. 570 P. 577 27. 20 2. 30.25  28. 6 4. /9 27. 20 2. 30.25  28. 6 4. /9 29. 8.4 6. approx 22 30. 14 31.  32. 58 33. 25 34. 7/2 or 3.5 35. 8 36. 27 37. 33 38. 23 /2 or 11.5 39. 5/4 or 1.25 54. 100 55. 50 56. 100/3

Areas of Sectors Math 2 - Lesson 82 Mr. Lopez

Areas of Sectors The area of a sector is the product of the ratio measure of the arc to 360 and the area of the circle. Area of sector AOB = A B O

Examples Find the area of sector DAN. Leave your answer in terms . A circle has a diameter of 20 cm. What is the area of a sector bounded by a 208 major arc? Round your answer to the nearest tenth. N D 120 5 A

More Examples Find the area of the shaded segment rounded to the nearest tenth. A O 6 B

Homework Answers 7. 40.5 yrd2 8. 64  9. 10. 12 in2 11. 12 ft2 12. 56 cm2 17. 22.1 cm2 19. 3.3 m2 21. 120.4 cm2 23. (54 + 20.253) cm2