Răspunsuri

2014-02-28T18:05:32+02:00
P patrat = 4 × l
Ptriunghi echil=3 × l
Deci
4l=5 supra 9 ×3l
4l= 15l supra 9
l triunghi =480 (ip problemei)
4l=15 ×480 supra9
l=800
2 5 2