//Section-12,Example-1,Page no.-SS.32
//To calculate Density of copper.
clc;
r=1.278
a=(4*r)/(sqrt(2))
n=4
M=63.5
N=0.602*10^24
D=(n*M)/(N*a^3)
disp(D,'Density of copper having FCC structure(gm/cc)')