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clear;
clc;
printf("\t example 2.7\n");
h=20; //convective heat transfer coefficient, W/(m^2*K)
k=0.074; //thermal conductivity, J/(m*K)
Ro=k/h; // formula for critical thickness of insulation
printf("\t critical thickness of insulation is : %.4f m\n",Ro);
printf("\t insulation will not even start to do any good until ratio of outer radius and inner radius is 2.32 or outer radius is 0.0058 m.")
//End
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