The general equation of the circle in standard form is:
[tex] (x-a)^{2} + (y-b)^{2} = r^{2} [/tex]
The center of this circle is (a,b) and the radius is r.
Comparing it to the given equation, we get:
a = 0
b = 7.5
r² = 9/49
So, the center of given circle is (0, 7.5) and its radius is 3/7
