To convert from m2 to ha, divide by 10,000:
40,000m2 = 40,000 / 10,000 = 4 ha

To convert from ha to km2, divide by 100:
2,600ha = 2,600 / 100 = 26 km2

To convert from m2 to ha, divide by 10,000:
700,000m2 = 700,000 / 10,000 = 70 ha

To convert from ha to km2, divide by 100:
19,000ha = 19,000 / 100 = 190 km2

To convert from m2 to ha, divide by 10,000:
45,600m2 = 45,600 / 10,000 = 4.56 ha

To convert from m2 to ha, divide by 10,000:
20,000m2 = 20,000 / 10,000 = 2 ha