1 square decimeter = 100 square centimeter

1 m2 = 100 square decimeter

1 m2 = 10000 cm2

1 m2 = 1000000 mm2

1 ha = 1 10,000 m2

1 km2 = 100 hectare =1100 million m2.

450,000 hectares = (4,500) hectares =(45) square kilometers

1 km2 = 100 hectare

1 ha = 100 ha

1 mu = 100 square meter

10000 square centimeter = 100 square decimeter

10000 square decimeter = 100 square meter

1 ten thousand square meters = 1 hectare, square kilometers

10000 hectares = 100 square kilometers

1 ha = 1 10,000 m2