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+//Exa 7.10
+clc;
+clear;
+close;
+//given data
+D=150*10^-3;// in m
+H=400*10^-3;// in m
+T1=500;// in K
+epsilon=0.7;
+// Formula F11=(4*H)/(4*H+D)
+F11=(4*H)/(4*H+D);
+sigma=5.67*10^-8;
+A1=%pi*D*H;
+q=sigma*A1*epsilon*T1^4*[(1-F11)/(1-F11*(1-epsilon))];
+disp(q,"Heat Heat loss for cavity in W");
+
+//Note: There is some difference between Code answer and book answer because value of F11 is wrong in the book \ No newline at end of file