cylindrical shape pipe of radius 0.2 m is used in a chemical industry in the transferring process. The outside surface temperature of the pipe is 500K and the atmosphere temperature around the pipe is 200 K. The film heat transfer coefficient is 10 W/m^2K. An insulation layer is used for reducing the heat flow to the outside atmosphere of thickness 0.08 m and the thermal conductivity 0.5 W/mK. Calculate the reduction in heat flow after using the layer of insulation. Length of pipe 5 m.