1.   Find the radius of the circle with equation (x - 4)2 + (y - 7)2 = 36.
    A. 4 B. 6
    C. 36 D. 7
    Hint

  2.   Which is an equation of the circle with center at P(-2, 5) and radius 2?
    A. (x - 2)2 + (y + 5)2 = 4 B. (x + 2)2 + (y - 5)2 = 2
    C. (x - 2)2 + (y + 5)2 = 2 D. (x + 2)2 + (y - 5)2 = 4
    Hint

  3.   Which of the following points is on the circle with equation
(x - 7)2 + (y + 3)2 = 25?
    A. (17, 12) B. (10, 1)
    C. (-8, -23) D. (5, -6)
    Hint

  4.   The center of the circle with equation (x + 4)2 + (y + 15) 2 = 49 has coordinates ________.
    A. (4, 15) B. (4, -15)
    C. (-4, 15) D. (-4, -15)
    Hint

  5.   Find the diameter of the circle with equation (x + 8) 2 + (y - 9) 2 = 121.
    A. 11 B. 121
    C. 17 D. 22
    Hint