(4). (a). Refer to the Figure 4 for the following question. Figure 4: Cross section of a coathanger die manifold What is the importance of geometries labeled 2 and 4 in determining product quality? If the die design does not have these geometries, what would happen? b) What is the function of pelletizing plate in an extrusion process? List and discuss TWO types of pelletizing techniques with the assistance of suitable diagrams