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+clear;
+clc;
+Tj=400 //junction temperature in Celsius
+TA=50 //ambient temperature in Celsius
+P=90 //power supplied in Watts
+Rth_dp=1.5 //in C/W
+convection_coeff=100 //heat convection cofficient in W/degree-C*m^2
+
+//Calculation
+Rth_sa=((Tj-TA)/P)-Rth_dp
+A=1/(Rth_sa*convection_coeff)
+
+format("v",5)
+disp(Rth_sa,"Maximum thermal temperature of heat sink (C/W)= ") //The answers vary due to round off error
+format("e",8)
+disp(A,"Surface Area (m^2)= ")