Internal surface of wall is at 900C Temperature. Wall is 60cm thick, 1m length and 1.5 m

Internal surface of wall is at 900ºC Temperature. Wall is 60cm thick, 1m length and 1.5 m width. Thermal conductivity of wall is 0.4 Watt/m-K. Find the thermal resistance and heat transfer rate of wall. Temperature of outside surface of wall is 200ºC.

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