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Insulation has a thermal conductivity of 0.04 Watt/(m-°C). What is the R-value for this insulation when it is 5-cm thick?
0.8 (m²-°C)/Watt
1.25 (m²-°C)/Watt
2.20 Watt/m²
20 Watt/(m²-°C)
20 (m²-°C)/Watt
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