Given data:
The center of the circle is (a, b)= (-10, -13).
The given radius of the circle is r=4.
The standard equation of the circle is,
[tex](x-a)^2+(y-b)^2=r^2^{}[/tex]Substitute the given values in the above expression is,
[tex]\begin{gathered} (x-(-10))^2+(y-(-13))^2=(4)^2 \\ (x+10)^2+(y+13)^2=16 \end{gathered}[/tex]Thus, the equation of the circle is (x+10)^2 + (y+13)^2 =16.