1. The problem statement, all variables and given/known data The rate of heat loss to the outside through a 10mm-thick glass roof of a green house is 120kW. The length and breadth of the glass material of the roof are 20m and 2m, respectively. Calculate the temperature of the outside if the temperature inside the green-house is 25 degrees C. Assume thermal conductivity of the glass material is 1.0W/m/degrees C. Please help as I don't know where to start. 2. Relevant equations 3. The attempt at a solution I'm not sure where to start unfortuanatly. Thanks in advance!