Question

Find the center and radius of the circle with equation (x – 3)^2 + (y – 6)^2 = 4.

Answer 1

To find the center and radius given your equation, remember (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle and r is the radius. In your equation, h = 3 and k = 6 and since 2^2 =4 your r value is 2. So the center is at (3,6) and the radius is 2.

Answer 2

To find the center and radius given your equation, remember (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle and r is the radius. In your equation, h = 3 and k = 6 and since 2^2 =4 your r value is 2. So the center is at (3,6) and the radius is 2.