Actually Welcome to the Concept of the Circles.
The centre of the circle is given as, (h, k)
The equation in form of centre and radius of the circle is given as,
===> (x-h) ^2 + (y-k) ^2 = r^2
hence, the equation would be,
===> (x-90)^2 + (y-195)^2 = (88)^2