Răspunsuri

2014-02-20T18:15:22+02:00
  • Utilizator Brainly
2014-02-20T18:15:39+02:00
Al=Pb·h;
d²=l²+l²=2l²=64 ⇒ l=2√2 cm ⇒Pb=4l=8√2 cm.
Al=8√2·4√2=64 cm².
3 3 3