Please give a complete answer in 20 minutes..My student id end with 8

In a chemical processing plant, Fluid X at velocity of a km/h and b C is flowing over a 15 cm diameter horizontal pipe maintained at uniform surface temperature of c C. Based on the information given in TABLE Q2, a. Determine the rate of heat transfer per unit length of the pipe. [20 marks] b. An engineer is proposed to reduce 40 % heat loss from the pipe by changing Fluid X to atmospheric air. Do you support this suggestion? Show appropriate calculations to justify your answer. [20 marks] TABLE Q2 Fluid X a, km/h b, C c, C Student with matric ID ending with respective number 0, 1,4 10 15 65 2, 3, 7 Saturated propane Saturated Refrigerant 134-a Water 5 10 80 5, 6, 8, 9 20 25 115