//Variable declaration


//Calculation
a1=4/sqrt(3);
R1=(a1/2)-1;           //radius of largest sphere
a2=4/sqrt(2);
R2=(a2/2)-1;       //maximum radius of sphere

//Result
printf('radius of largest sphere is %f*r\n',R1)
printf('maximum radius of sphere is %f*r',R2 )