a)
4730cm kw=0,00473a
125dm kw=0,0125a
450dm kw=0,045a
450m kw=0,45a
200m kw=0,02a
500m kw=0,05a
4,7m kw=0,47a
1670m kw=1,67a
0,35 ha=35a
1000 ha=1000000
4 ha=400a
12.3 ha=1250a
12 km kw=12000
103,46 ha=10346
b)
24 600dm kw=0,0246ha
890 620 m kw=0,89062ha
1959 a=19,59ha
250 000 dm kw=0,25ha
210 a=2,1ha
427 805 m kw=427,805ha
5 260 597 km kw=0,005260597ha
320000000 cm kw=3,2=ha
62 508 870 a=625088,7ha
27, 10 a=0,271ha
20010000 km kw=0,2001ha
1 986 000 a=19860ha