Answer:
X^2+y^2=45
Step-by-step explanation:
Since the equation of a circle is (x – h)^2 + (y – k)^2 = r^2, we can substitute the h and k in which are both 0 and we get x^2+k^2=r^2. Using the Pythagorean theorem to find the radius, we get r^2=45 or r=sqrt(45). So the equation for the circle is x^2+y^2=45.
