Răspunsuri

2014-04-14T17:24:30+03:00
L+l=56
L=3*l
4*l=56,  l=14 , L=42
Aria=L*l=14*42=588
multumesc :*
2(L+l)=56
L+l=24
Am gresit :D poti continua, inlocuiesti datele
L+l=28 !!!
2014-04-14T17:47:54+03:00
2(L+l)=56cm ---> L+l=56 : 2=28
 L=3l           ↓
 L+l=28=3l + l =4l => 4l=28 ; l=28:4=7 => L=3x7=21
aria dreptunghiului este = Lxl = 7x21=147