Question

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

Answer 1

Answer: B

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

Answer 2

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.