Răspuns :
P = 2L + 2l = 2(L+ l)
2(L+ l) = 30
L + l = 30 / 2
L + l = 15
Solutii:
L = 14 si l = 1
L = 13 si l = 2
L = 12 si l = 3
L = 11 si l = 4
L = 10 si l = 5
L = 9 si l = 6
L = 8 si l = 7
l=1m=>L=(30-2):2=14m
l=2m=>L=(30-4):2=13m
.......................................
l=7m=>L=(30-14):2=8m
l={1,2,3,4,5,6,7}
L={14,13,12,11,10,9,8}
l=2m=>L=(30-4):2=13m
.......................................
l=7m=>L=(30-14):2=8m
l={1,2,3,4,5,6,7}
L={14,13,12,11,10,9,8}
