Răspuns:
VABCD pri p reg =>VB=VC=20=BC
=>tr VBC echil. => Avbc=l^2V3/4=20^2V3/4=400V3/4=100V3 cm^2
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Răspuns:
VABCD pri p reg =>VB=VC=20=BC
=>tr VBC echil. => Avbc=l^2V3/4=20^2V3/4=400V3/4=100V3 cm^2