Răspunsuri

2014-08-19T16:39:09+03:00
P = 2(L+l)
l=0,9*L

15,2=2(L+0,9L)
15,2=2L+1,8L
15,2=3,8L
L=152:38
L= 4 m.

l=0,9*4
l=3,6m