we know that
the equation of the circle is of the form
\((x-h)^{2} +(y-k)^{2} =r^{2}\)
where
(h,k) is the center of the circle
r is the radius of the circle
in this problem we have
\((x+5)^{2} +(y-3)^{2} =4^{2}\)
so
the center is the point \((-5,3)\)
the radius is \(4\ units\)
therefore
the answer is
The radius of the circle is equal to \(4\ units\)
