At the end of its life, a star having a mass of 1.4 times the Sun's mass is estimated to collapse, joining its protons and electrons to form a neutron star. Such a star could be thought of as a huge atomic nucleus. When a star of mass of around 1.4 x 1.99 x 10^30 kg collapsed into neutrons (mn = 1.67 x 10^-27 kg), determine what would its radius be? (Suppose that r = r0 {A^1/3}.)