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+//Page Number: 515
+//Example 9.23
+clc;
+//Given
+lam=8000D-10; //m
+a=0.5D-2; //m
+D=4D+8; //m
+
+//Angular Spread
+t=(1.22*lam)/a;
+disp('rad',t,'Angular spread:');
+
+//Aerial spread
+A=%pi*((D*t)^2);
+disp('m sqr',A,'Aerial spread:');
+
+
+//Answer for A is given as 193 m sqr but it is 1.915D+10 m sqr