b) One side of a copper block 5 cm thick is maintained at 250°C. The other side is covered with a layer of fiberglass 2.5 cm thick. The outside of the fiberglass is maintained at 35°C, and the total heat flow through the copper- fiberglass combination is 52 kW. What is the area of the slab K=401 K=0×43 250č 358 AT Copper Fibe Rtotul 5cm 2. Sam R total = L KAZ - Ti XM (KA) 2500 R Fibe Ribe T2 = 35