help me solve this question

1) Use an electrical circuit diagram to represent the following systems (The diagram must be properly labelled): Length --Material a) K (Wim.K) (mm) 10 0.17 T= 20C A hi D B To= -15C he plaster board polystyrene foam C B 100 0.027 cork granulated 100 0.045 D Plywood 20 0.12 b) A storage tank consists of a cylindrical section that has length and inner diameter of L=2m and Di=1m, respectively, and two hemispherical end sections. The tank is constructed from 20mm thick pyrex glass (k=1.4 W/m.k) and is exposed to ambient air at 300K (convective coefficient=10 W/m2.K). The tank is used to store heated oil, which maintained the inner surface of the tank at 400K. 2) Solve the following problems using the circuit diagrams you developed from (1): b) A storage tank consists of a cylindrical section that has length and inner diameter of L=2m and D=1m, respectively, and two hemispherical end sections. The tank is constructed from 20mm thick pyrex glass (k=1.4 W/m.K) and is exposed to ambient air at 300K (convective coefficient=10 W/m.K). The tank is used to store heated oil, which maintained the inner surface of the tank at 400K. Neglect the radiation effect: (ii) Determine the temperature of the outer surface of the tank. Ans: (ii) 387.1 K