Răspunsuri

2014-03-20T19:23:42+02:00
P= 2L+2l
220= 2L+2l
Diferenta laturilor= 220/22=10
L-l=10
L=10+l
220= 2( 10+l)+ 2l
220= 20+ 2l+2l
220=20+4l
4l=220-20
4l=200
l=200/4
l=50
L=10+50
L=60