Question

two nuclei have the mass number ratio in the ratio 8:64.what is the ratio the the two nuclei radii​

Answer 1

Taking ratio :

$\tt \frac{R_1}{R_2} = \frac {R_0}{R_0} \frac {8^{1/3}}{64^{1/3}}$

$\tt \frac {R_1}{R_2} = \frac{2}{4} = \frac{1}{2}$