## anonymous 4 years ago a circle has the equation x^2+y^2=16. find the center, radius and graph

1. anonymous

how do I put this in standard form and general form pls?

2. anonymous

$\LARGE (x-0)^2+(y-0)^2=4^2$ $\LARGE Q(0,0) \quad r=4$

3. anonymous

(x-a)^2 + (y-b)^2 = r^2 (a,b) = Centre r = Radius Centre is (0,0) and Radius is $\sqrt{16} = 4$

4. anonymous

thank you ! both of you!

5. anonymous

Although this looks like ellipse, is a circle with radius 4 :)

6. anonymous

and it is an ellipse, as well as a circle.