Assume a 10cm diameter wafer has a cost of $8, contains 64 dies, and has 0.020 defects/cm2. Assume a 15cm diameter wafer has a cost of $12, contains 90 dies, and has 0.030 defects/cm2. a) Find the yield for both wafers. b) Find the cost per die for both wafers. c) If the number of dies per wafer is increased by 10% and the defects per area unit increases by 15%, find the die area and yield.