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 o yes, thats correct, meant to be moment, but it still wont change the answer, im beginning to think that the way i expanded the cross section was incorrect, i just made the 2 horizontals 30 times longer ( to the right) maybe i was meant to expand them to both sides, 14.5 to each side, doing this would still not give me a correct answer, but much closer, by doing this i get 0.49cm is it possible that the answer i was given in the textbook (0.408) is incorrect, could someone please check this for me