From observations of stellar orbits near the center of our Milky Way galaxy, it appears that a massive object exists there with a mass of about 4.1 million times the mass of the Sun. Given that one solar mass is 2.0×1030 kg, what would be the radius of a Black Hole containing this amount of mass? (Just an interesting note: the average radius of the orbit of Mercury from the Sun is about 5.8×1010 m.)