Răspunsuri

2014-06-08T13:15:53+03:00
L+l=4
L-2=2   se aduna cele 2 ecuatii si se obtine

2L /=6

L=6:2
L=3

l=4-3
l=1

A=L*l=3*1=3
2014-06-08T13:16:20+03:00
L+l=4
L-l=2
aduni si ajungi 2L=6=>L=3cm
l=1cm
A=L*l=3 cm^2