Odpowiedź:
a)
1cm*300= 300cm = 3m
1mm*300= 300mm = 30cm = 0,3m
2cm*300= 600cm = 6m
10cm*300+8mm*300= 3000cm+2400mm =
= 3000cm+240cm = 3240cm = 32,4m
b)
1cm*500= 500cm = 5m
1mm*500= 500mm = 50cm = 0,5m
2cm*500= 1000cm = 10m
10cm*500+8mm*500= 5000cm+4000mm =
5000cm+400cm= 5400cm= 54m