Răspunsuri

2014-05-08T20:10:59+03:00
Aria=l*L
l*L=2.45
L=5l
5l*l=2.45
5l^2=2.45
l^2=2.45:5
l^2=0.49
l= radical 0.49
l=0.7

L=0.7*5
L=3.5