If one of the diameters of the circle ${\mathrm{x}}^2+{\mathrm{y}}^2-10\mathrm{x}+4\mathrm{y}+13=0$ is a chord of another circle C, whose center is the point of intersection of the lines $2\mathrm{x}+ 3\mathrm{y}=12$ and $3\mathrm{x}-2\mathrm{y}=5$, then the radius of the circle C is