Question

What is the equation of the circle below?

Answer 1

Answer:

$\displaystyle \boxed{x^2 + y^2 = 25}$

Step-by-step explanation:

Since the center [(h, k)] is at the origin, we do not move, so it stays at $\displaystyle x^2 + y^2.$Now, the circle equation is $\displaystyle [X - H]^2 + [Y - K]^2 = R^2,$so since the radius is 5, we square it to get 25. So, with that being said, you have this:

$\displaystyle \boxed{x^2 + y^2 = 25}$

I am joyous to assist you anytime.

Answer 2

Since radius is 5, equation is:

$x^2+ y^2= 5^2\\\boxed{x^2+ y^2=25}$