lab_6_1

 Vk=1;
 r=(Vk*3*3^(1/2)/pi)^(1/3);
 l=r*2/3^(1/2);
 S=pi*r*l;
 R=(S/(4*pi))^(1/2);
 Vsh=(4/3)*pi*R^3;
 a=(Vsh)^(1/3)