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• h=9dm b=9dm B=(189*2/9)-9=33dm ; (B-b)/2 = 12dm lato obliquo = radq(12^2+9^2) = 15dm perimetro = 33+15+9+15=72dm

  in help matematica problema ( urgente)? Comment by hannah-hall_60c2494b987fd June 2021