Usually, the propulsion rate of two adjacent area units is 100, but the propulsion rate of hectares and square meters is 10000. Details are as follows:

1 km2 = 100 hectare

1 ha = 1 10,000 m2

1 m2 = 100 square decimeter

1 square decimeter = 100 square centimeter

Public area unit rate table (mm? ，cm？ ，dm？ ，m？ , huh? ，km？ Wait a minute. ):

1km？ = 100hm？

1hm？ = 10000m？

1m？ = 100dm？

1dm？ = 100cm？

1cm？ = 100mm？