The figure below shows a multi-layered plate to which heat is transferred. The thickness of each plate is LA=0.015m,B=0.1m and LC= 0.075m, and the thermal conductivity of each plate is KA=0.0151,KB=0.0433 and KC=0.762(Wm1 k1) Accordingly, a. If the inner surface T1=255K and the outer surf /SeT4=298K, calculate the heat flux through the plate. b. It is thought that by increasing the "LB" thickness of the B plate, the heat loss can be reduced by 50% . Accordingly, what should the LB value be