Răspunsuri

2014-10-28T08:26:57+02:00
Cu Pitagora calculam A'C' A'C'^2=l^2+l^2=2l^2 A'C'=l√2 P=A'C'+C'B'+A'B'=l+l+l√2=2l+l√2 cm
3 3 3