Răspunsuri

  • Utilizator Brainly
2015-02-16T17:50:44+02:00
AB,AC catete unde AB=AC
BC ipotenuza
A= AB·AC/2
20=AB²/2
AB²=40
AB=2√10 cm
AB²+AC²=BC²
2·(2√10)²=BC²
2·40=BC²
BC²=80
BC=4√5 cm
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