A graphing calculator is recommended A rectangular beam is to be cut from a cylindrical log of diameter d 30 cm The figures show different ways this can be done depth a Express the cross sectional area of the beam as a function of the angle 8 in the figures A 8 b Graph the function you found in part a A 6 800 600 400 200 O width A 8 800 0 5 1 0 1 5 0 A 8 30 25 20 15 10 5 A 6 800 0 5 1 0 1 5 U