Răspuns :
L = l +3
A = 2 * (L+l) => 1720 = 2 * (L+l) => L+ l = 860
l+3+ l = 860 => 2l = 867 => l = 433.5
L= 433.5+3 = 436.5
A = 2 * (L+l) => 1720 = 2 * (L+l) => L+ l = 860
l+3+ l = 860 => 2l = 867 => l = 433.5
L= 433.5+3 = 436.5