A steel pipe with an outside diameter of 45 mm carries a hot fluid at 539 K. The pipe is insulated with 10 mm lagging material (k = 0.22 W/m°C) followed by 30 mm of fiber glass insulation (k = 0.07...

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Extracted text: A steel pipe with an outside diameter of 45 mm carries a hot fluid at 539 K. The pipe is insulated with 10 mm lagging material (k = 0.22 W/m°C) followed by 30 mm of fiber glass insulation (k = 0.07 W/m°C). If the outside insulation temperature is 328 K, calculate the interface temperature in Celsius between the fiber glass insulation and the lagging material. (Write your answer in two decimal places.)