Which of the following most nearly gives the polar radius 80 mm of gyration about point A for the shaded area shown? a) TA 78.9 mm 80 b) TA = 67.3 mm mm c) ra = 73.1 mm 60 mm d) ГА — 68.2 тm e) TA = 74.6 mm 'A f) None of the choices

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