Question

The circle is centered at the origin and the length of its radius is three. What is the circles equation

Answer 1

x^2 + y^2 = 3^2

Explanation:

Use the standard equation of a circle with center at (h, k) and radius r:

(x - 0)^2 + (y - k)^2 = 3^2, or

x^2 + y^2 = 3^2