An electric kitchen range has a total wall area of 1.4m ^ 2 and is insulated with a layer of fiber glass that has a temperature of 175° C and its outside surface is 35°C. The fiber glass has a thermal conductivity of 0.4W * m ^ - 1 * K ^ - 1 Calculate the rate of flow of heat through the insulation, assuming the fibre as a flat slab of area 1.4m ^ 2

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