What will be the ratio of radii of two nuclei with mass number A1 and A2?

The radius of nucleus of an atom of mass number A is given by R = R₀A^1/3 where R₀ is unique constant = 1.2 x 10-15 m.
Hence , R α A^1/3 
So , ratio of radii of two nuclei with mass numbers A₁ and A₂ is  R₁/R₂ = { A₁/A₂ }^1/3