// Example No.6.13.
// Page No.191.
//To find the number neighbour distance.
clc;clear;
disp('i)For (100) plane');
disp('Number of atoms per m^2 = 1/4r^2');
disp('i)For (110) plane');
c1 = 1/(8*sqrt(2));
printf("\nc1= %.4f",c1);
disp('Number of atoms per m^2 = (0.084/r^2)');
disp('i)For (111) plane');
c2 = 1/(2*sqrt(3));
printf("\nc2= %.4f",c2);
disp('Number of atoms per m^2 = (0.2887/r^2)');