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diff --git a/3753/CH3/EX3.4/Ex3_4.sce b/3753/CH3/EX3.4/Ex3_4.sce
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+//Example number 3.4, Page number 3.34
+
+clc;clear;close
+
+// Variable declaration
+V=12*10**4 // in m^3
+A=13200 // in m^2
+x=2               // The absorption become 2*A of open window
+
+// Calculation
+T1=(0.16*V)/A      // Sabine's formula  
+T2=(0.16*V)/(x*A) // in s
+Td=T1-T2 // in s
+
+// Result
+printf("T1 = %0.2f second",T1)
+printf("\nT2 = %0.2f second",T2)
+printf("\nChange in Reverbration time = %0.3f second",Td)