Question

This circle centered at the origin and the Length of its radius is 8. What is the equation of the circle?

Answer 1

The equation of the circle is always:
$(x - h)^{2} + (y-k)^{2} = r^{2}$
Where (h, k) is the center of the circle, r is the radius. So, the equation will be:
$x^{2} + y^{2} = 64$
Hope this helps! The answer is B.

Answer 2

Answer: B

Step-by-step explanation: The equation would be x^2+y^2=64 or 8^2