2. The dimensions of the roof of the house are given. If the thermal conductivity of the roof is 0.8 W/mK, a) determine amount of heat loss for 10 hours during the night? b) cost of electricity is 0.11 USD/kWh, how much does it cost to heat the house? Concrete roof 8 m 4°C 15°C 6m 0.25 m

Q: This second answer is still incorrect.  Would there be another way to figure this out?   Thanks

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Q: Hi can you please solve the 3 part too

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