The average thermal conductivity of the walls (including windows) and roof of a house in the figure shown below is 4.8 x 104 kW/m °C, and their average thickness is 22.6 cm. The house is heated with natural gas, with a heat of combustion (energy given off per cubic meter of gas burned) of 9,300 kcal/m³. How many cubic meters of gas must be burned each day to maintain an inside temperature of 27.6°C if the outside temperature is 0.0°C? Disregard surface air layers, radiation, and energy loss by heat through the ground. m³ 37.00 8.00 m Need Help? Read It 10.0 m 5.00 m

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