Question #1

1. Question #1

2. Question #1 (True or False) The radius of a circle is twice the diameter of the circle.

3. Answer #1 The radius of a circle is twice the diameter of the circle. True

4. Question #2 (True or False) The value for (pi) varies depending on the diameter of the circle.

5. Answer #2 The value for (pi) varies depending on the diameter of the circle. False

6. Question #3 (True or False) To calculate the radius of a circle, you can divide the diameter by 2.

7. Answer #3 To calculate the radius of a circle, you can divide the diameter by 2. True

8. Question #4 (True or False) If the radius of a circle is doubled, the area of the circle is also doubled.

9. Question #4 If the radius of a circle is doubled, the area of the circle is also doubled. False

10. Question #5 (True or False) A pie chart is another name for a circle graph.

11. Answer #5 A pie chart is another name for a circle graph. True

12. Question #6 When drawing a circle graph, which item should you use to measure each section?

13. Answer #6 When drawing a circle graph, which item should you use to measure each section? Protractor

14. Question #7 The graph below accurately shows how Miriam uses her computer time. If she spends 21 h each week on her computer, how much of that time does she spend playing games?

15. Answer #7 The graph below accurately shows how Miriam uses her computer time. If she spends 21 h each week on her computer, how much of that time does she spend playing games? Answer is 20% of 21 = 4.2 hours

16. Question #8 A small group that represents an entire population is called a

17. Answer #8 A small group that represents an entire population is called a Sample

18. Question #9 Which one of the following words describes the distance around a circle?

19. Answer #9 Which one of the following words describes the distance around a circle? Circumference

20. Question #10 Which of the following calculations is the diameter of a circle equal to? Double the radius of the circle B. half the area of the circle C. half the circumference of the circle D. the circumference of the circle

21. Answer #10 Which of the following calculations is the diameter of a circle equal to? Double the radius of the circle

22. Question #11 The circumference of a circle is approximately three times its

23. Answer #11 The circumference of a circle is approximately three times its diameter

24. Question #12 What is the radius of a circle that has an approximate circumference of 44.588 m?

25. Answer #12 What is the radius of a circle that has an approximate circumference of 44.588 m? 7.1 m

26. Question #13 Calculate the approximate circumference of a circle with a radius of 3.7 m. Round your answer to the nearest hundredth of a metre.

27. Answer #13 Calculate the approximate circumference of a circle with a radius of 3.7 m. Round your answer to the nearest hundredth of a metre. 23.24m

28. Question #14 The formula for finding the area of a circle is _____.

29. Answer #14 The formula for finding the area of a circle is _____. 2 A = xr

30. Question #15 What type of food accounts for of Claude’s Diet?

31. Answer #15 What type of food accounts for of Claude’s Diet? Fruits and Vegetables

32. Question #16 A sector for a circle graph represents 35% of the data. What is the central angle for this sector?

33. Answer #16 A sector for a circle graph represents 35% of the data. What is the central angle for this sector? 126’

34. Question #17 If you were to draw the following circle graph, what central angle would you use to create the sector labeled French Fries?

35. Answer #17 If you were to draw the following circle graph, what central angle would you use to create the sector labeled French Fries? 144’

36. Question #18 A sector of a circle graph represents 20% of the data. What would be the central angle of this sector?

37. Answer #18 A sector of a circle graph represents 20% of the data. What would be the central angle of this sector? 72’

38. Question #19 One sector of a circle graph covers 55% of the graph. What is the central angle of this sector?

39. Answer #19 One sector of a circle graph covers 55% of the graph. What is the central angle of this sector? 198’

40. Question #20 The radius of this circle is

41. Answer #20 The radius of this circle is 4.5cm

42. Question #21 The value of pi ( ), rounded to the nearest hundredth, is

43. Answer #21 The value of pi ( ), rounded to the nearest hundredth, is 3.14

44. Question #22 The formula that you can use to calculate the circumference of this circle is

45. Answer #22 The formula that you can use to calculate the circumference of this circle is C= xd

46. Question #23 You can use the formula _________________________ to calculate the area of a circle when you know the radius.

47. Answer #23 You can use the formula _______________ to calculate the area of a circle when you know the radius. 2 A = xr

48. Question #24 The approximate area of a circle with a radius measuring 5 cm is

49. Answer #24 The approximate area of a circle with a radius measuring 5 cm is 2 78.5 cm

50. Question #25 The sum of all of the central angles for the sectors in a circle graph is