Răspuns:
1)
5 dam = 50 m
2 km = 2000 m
400 dm = 40 m
2)
2 tone = 2000 kg
3 q = 300 kg
pb.6
perimetrul se notează cu P
P = 12 × 4
P = 48 m
A = 12 × 12
A = 144 m
pb.7
P = 2 × L + 2 × l
P = 2 × 8 + 2 × 6
P = 16 + 12
P = 28 m
A = 8 × 6
A = 48 m
