Respuesta :

Danboghiu66

Answer:

Center: (0,0)

Radius: 5

Step-by-step explanation:

Let O(xo,yo) be the center (of the circle) with the coordinates xo, yo.

If R is the radius, then we have:

(x-xo)²+(y-yo)²=R².

In our case: x²+y²=25, the center is at (0,0), and R²=25, so R=5