Question b8a225ff

Circle A in the xy-plane has the equation ${\left(x+5\right)}^2+{\left(y-5\right)}^2=4$. Circle B has the same center as circle A. The radius of circle B is two times the radius of circle A. The equation defining circle B in the xy-plane is ${\left(x+5\right)}^2+{\left(y-5\right)}^2=k$, where $k$ is a constant. What is the value of $k$?