Răspunsuri

2014-05-06T17:08:29+03:00
4l> 12
l²< 20

 Din astea doua rezulta ca l > 3
l ∈ (4,5,....)
daca l=4, l²= 16 cm
daca l= 5, l²=25 cm
25>20, de unde rezulta ca l=4.
12 2 12