a. Assume the part is to be die-casted in a 2-cavify (12) die from aluminum alloy. The part volume is 126.310.84mm3. Assume that the average wall thickness is 12.5mm and the maximum thickness is 15mm. Determine the appropriate machine size and estimate the total die casting cycle time, b. Based on the design guidelines for die casting, redesign the part for better quality. Sketch your new design (use cross section, ete.) and briefly describe why you need to change the design