write the assumptions for me pleaseeee i need it so fast

The top surface of a metal plate (kbuse=237W/mK) is being cooled by air (Km==0.243W/m/K) while the bottom surface is exposed to a hot steam at 100C with a convection heat transfer coefficient of 30W/m2. K. If the bottom surface temperature of the plate is 80C, determine the temperature gradient in the air and the temperature gradient in the plate at the top surface of the plate