Răspuns :
L=9l
9l × l=324
9l la patrat= 324
l la patrat= 324:9
l la patrat= 36
l = 6
L= 9×6 = 54
2×6+2×54=12+108
P= 120
9l × l=324
9l la patrat= 324
l la patrat= 324:9
l la patrat= 36
l = 6
L= 9×6 = 54
2×6+2×54=12+108
P= 120