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Chapter 9

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Twenty Questions

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Twenty Questions

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Twenty Questions

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1.If a radius of a circle measures 5 in, what is the exact area of the circle?

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2.82 in

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3. If a diameter of a circle measures 25 inches, what is the exact circumference of the circle?

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4. If a radius of a circle measures 25 inches, what is the area of the circle to the nearest hundredth?

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10 inches

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6. If the circumference of a circle measures 25 inches, what is the length of a radius of the circle to the nearest hundredth? 3.98 inches

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7. If the diameter of a circle measures 25 inches, what is the area of the circle to the nearest hundredth?

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8. If radius of a circle measures 25 inches, the exact circumference is ____.

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5.92 inches

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10. If the circumference of a circle is 35 inches, find the length of a diameter of the circle to the nearest hundredth inches

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11. If a diameter of a circle measures 10 inches, what is the circumference of the circle to the nearest hundredth? inches

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12. Find the area of the shaded sector if m

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13. Find the area of the shaded sector if m

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14. Find the area of the nonshaded sector if m

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60

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120

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70

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9.08 inches

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200

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150

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230

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6.98 inches

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90

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14.14

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45

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50

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310

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130

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30. m<4 = ? 70

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50

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32. Find the radius of a circle if a 24-inch chord is 9 inches from the center. 15 inches

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70

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34. FH = 10 and AE =4, find AF. 6.4

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33.69

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36. Find the measure of each arc formed when a regular hexagon is inscribed in a circle. 60

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37. VY = FH, FE = 3, and a radius of the circle measures 6. Find AX. 5.20

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38. AX = AE, AV = 13, VY = 16, find EB 2.75

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39. Find the length of a chord that is 7 inches from the center of a circle with a radius of 15 inches

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40. Find AZ

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42. Find x. 3

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43. Find x

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44. Find x. 4.47

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45. Find x

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90

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27

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140

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50. Find m3. 27

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