Distance: metre (m); kilometre (km).
Area: hectare (ha); square kilometre, = 100 hectare.
Mass: gram (g); kilogram (kg); tonne, = 1,000 kilogram.
Time: second (s or sec); minute.
A billion is a thousand million.
Distance: metre (m); kilometre (km).
Area: hectare (ha); square kilometre, = 100 hectare.
Mass: gram (g); kilogram (kg); tonne, = 1,000 kilogram.
Time: second (s or sec); minute.
A billion is a thousand million.