Acone-shaped part is to be fabricated using stereolithography. the radius of the cone at its base = 35 mm, and its height = 50 mm. to minimize the staircase effect, layer thickness = 0.05 mm. the diameter of the laser beam = 0.22 mm, and the beam is moved across the surface of the photopolymer at a velocity of 900 mm/s. compute an estimate for the time required to build the part, if 15 s are lost each layer to lower the height of the platform that holds the part. neglect post-curing time. setup time for the job = 25 min.