Răspunsuri

2014-03-17T13:42:34+02:00
Perim =L+L+l+l=180
2(L+l)=180
L+l=90
l=2L/3

2L/3+L=90  amplif cu 3
2L+3L=270
5L=270
L=54

l+54=90
l=90-54
l=36