Physics - Heat & Thermo Question with Solution | TestHub

A refrigerated cubical container is maintained at an inner temperature of $-5^{\circ }\mathrm{C}$ in a room where the temperature is $20^{\circ }\mathrm{C}$. The side of the cube is 2m and has a 5mm thick aluminum wall( k=200 W/mK)

which is insulated by a 1 cm layer of cork ($\mathrm{k}=0.04\mathrm{W}/\mathrm{mK}$). How many watts of heat (in W ) is transmitted through the walls to the container?