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Na questão 4... como x4000raizde3/3 dá 2.309,40?
x = 4000*√3/3 = 4000/√3 = 4000/1,732 = 2309,40
pronto
http://www.wolframalpha.com/input/?i=4000sqrt3+%2F... < veja
V3 = 1,73
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x = 4000*√3/3 = 4000/√3 = 4000/1,732 = 2309,40
pronto
http://www.wolframalpha.com/input/?i=4000sqrt3+%2F... < veja
V3 = 1,73