Segment 1: A 1 = 250 × 38 = 9500 mm 2 y 1 = 38 + 300 + 38 2 = 357 mm. ... an x-centroid) 1 1 n ii i n i i xA x A = = = ∑ ∑ ID Area x i (in2) (in) A 1 2 0.
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