a. A slab-milling operation is being carried out on a 0.1 m-long, 0.03 m-wide aluminum block at a feed f= 2 mm/tooth and a depth of cut d = 4 mm. The cutter is D=40 mm in diameter, has 12 straight teeth, rotates at N = 60 rpm. Calculate the following: 1. Given data (2 marks) 2. Material-removal rate, (4 marks) 5 3. Cutting time, (4 marks)