Răspunsuri

2014-05-18T17:22:30+03:00
DE _|_ AB,     DE inaltimea trapezului
AE=(24-16)/2=4 cm
DE²=AD²-AE²=64-16=48
DE=4√3
A=(B+b).h/2=(24+16).4√3/2=80√3 cm²

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