clear
clc
disp('Exa-12.2');
r0=1.2;         //standard value.
A=12; 
r= r0*A^(1/3);printf('The value of mean radius for C is: %.2f fm\n',r);
A=70;        //given value
r= r0*A^(1/3);printf('The value of mean radius for C is: %.2f fm\n',r);
A=209;
r= r0*A^(1/3);printf('The value of mean radius for C is: %.2f fm',r);