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//Variable declaration
n=8; //number of atoms
a=5.62*10**-10; //lattice constant(m)
M=72.59; //atomic weight(kg)
Na=6.02*10**26; //avagadro number
//Calculation
rho=n*M/(a**3*Na); //density(kg/m**3)
//Result
printf('density is %0.3f kg/m**3 \n',(rho))
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