1. The diameter of a circle is 8. What is the radius? A. 4 B. C. 16 D. Hint 2. In the figure below, the diagonals of the square pass through the center of the circle. Find the exact circumference of the circle. A. B. C. D. 28 Hint 3. A. 320 B. 40 C. D. 20 Hint 4. In the figure, XZ = 12, UV = 8, and is a diameter. Find the length of a radius of the circle. A. 8 B. 10 C. 12 D. Hint 5. is a diameter. Find . A. 180 B. 270 C. 360 D. 90 Hint 6. A. B. 19 C. 11 D. 60 Hint 7. Which is an equation of the circle with center at P(-2, 5) and radius 2? A. (x + 2)2 + (y - 5)2 = 2 B. (x - 2)2 + (y + 5)2 = 4 C. (x - 2)2 + (y + 5)2 = 2 D. (x + 2)2 + (y - 5)2 = 4 Hint 8. In the figure, , and . If MP = 7, then PQ = ____. A. 14 B. 7 C. 24 D. 25 Hint 9. Find x. A. 90 B. 80 C. 100 D. 110 Hint 10. If is tangent to circle M, what is the length of a radius of circle M? A. 8 B. C. 16 D. 2 Hint 11. Find the value of z. A. B. C. 17 D. Hint 12. Find the value of z to the nearest tenth. A. 10.4 B. 7.8 C. 8.0 D. 11.0 Hint 13. Find the value of x. A. 4 B. 2 C. 5 D. 3 Hint 14. Find the diameter of the circle with equation (x + 8) 2 + (y - 9) 2 = 121. A. 11 B. 17 C. 22 D. 121 Hint 15. In J, is a diameter with JL = 18 and m = 140. Find the length of . A. 113.1 B. 44.0 C. 12.6 D. 6.3 Hint 16. A. 37.5 B. 75 C. 125 D. 62.5 Hint