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+//Example number 3.11, Page number 50
+
+clc;clear;
+close;
+
+//Variable declaration
+r1=1.258*10**-10;     //radius(m)
+r2=1.292*10**-10;     //radius(m)
+//Calculation
+a_bcc=4*r1/sqrt(3);
+v=a_bcc**3;
+V1=v/2;
+a_fcc=2*sqrt(2)*r2;
+V2=a_fcc**3/4;
+V=(V1-V2)*100/V1;           //percent volume change is",V,"%"
+//Result
+printf("percent volume change is %.1f %%",V)