Answer:
r = 10
Step-by-step explanation:
The equation of a circle in standard form:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
(h, k) - center
r - radius
We have the equation:
[tex]x^2+y^2=100\\\\(x-0)^2+(y-0)^2=10^2[/tex]
Therefore we have
the center (0, 0)
radius r = 10
