1. The diameter of a circle is 7.5. Find the circumference to the nearest tenth. A. 23.6 B. 16.8 C. 35.4 D. 47.1 Hint 2. Refer to circles B and D in the figure below. If BC = 5 and CD = 5, find AE. A. 20 B. 10 C. 25 D. 15 Hint 3. A. 115 B. 90 C. 25 D. 65 Hint 4. A. 20 B. 13 C. 22 D. 7 Hint 5. A. 35 B. 70 C. 290 D. 90 Hint 6. Find the value of y. A. 83 B. 7 C. 87 D. 97 Hint 7. Find . A. 25 B. 105 C. 100 D. 80 Hint 8. Find the value of x. A. 20 B. 8 C. 0.8 D. 5 Hint 9. Find an equation of the circle that has a diameter with endpoints at (6, 10) and (-2, 4). A. (x - 4)2 + (y - 3)2 = 53 B. (x + 2)2 + (y - 4)2 = 100 C. (x - 2)2 + (y - 7)2 = 25 D. (x - 6)2 + (y - 10)2 = 100 Hint 10. Find an equation of the circle passing through A(2, 4), B(-2, 6), and O(0,0). A. (x - 3)2 + (y + 6)2 = 32 B. x2 + y2 = 40 C. (x - 2)2 + (y - 4)2 = 20 D. (x + 1)2 + (y - 3)2 = 10 Hint 11. is a diameter of the circle. Find the value of x. A. B. 7 C. D. Hint 12. In the figure, , and . If MP = 7, then PQ = ____. A. 7 B. 24 C. 14 D. 25 Hint 13. If is tangent to circle M, what is the length of a radius of circle M? A. 2 B. 8 C. 16 D. Hint 14. is tangent to circle S. LT = _______. A. B. 18 C. 12 D. Hint 15. Find mNAL. A. 96 B. 150 C. 78 D. 21 Hint 16. In the figure, and are ______. A. secant segments B. tangent segments C. secants D. external secant segments Hint