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2014-11-17T20:00:46+02:00
A=C = 30
notam d(B, AD)= BE
BCE
m(E)=90
m(C)=30 => BE=BC/2=> BE=12 cm
A ROMB-provine din paralelogram=> A ABCD= BXh=ABXBE=24X12=288 cm 2
A ABCD= ACXBD=>
288= ACX18=> AC=16 cm

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2014-11-17T20:06:16+02:00