Question

The center of the circle is at (1, 3) and the radius is 4. What is the equation of the circle in standard form?

Answer 1

(x - 1)^2 + (y - 3)^2 = 4^2

Explanation:

The generic equation of a circle in standard form is:

(x - h)^2 + (y - k)^2 = r^2, where the center is (h, k) and the radius is r.

Taking the given info, we then have:

(x - 1)^2 + (y - 3)^2 = 4^2