What is the center and radius of the circle with the equation x2 + y2 - 10x - 12y + 36 = 0?

X² + y² - 10 x - 12 y + 36 = 0

(x² - 10 x + 25) + (y² - 12 y + 36) - 25 - 36 + 36 = 0

(x - 5) ² + (y - 6) ² = 25

(x - 5) ² + (y - 6) ² = 5²

Answer:

The center: (5, 6), the radius: r = 5