1 km2 =( 100000)m2 =(0.000 1)ha。
Fill in the appropriate area units.
Taiwan Province Province is the largest island in China, covering an area of 35,759 square kilometers.
The school covers an area of18000m2.
The area of a classroom is about 40 square meters.
The rectangular playground is125m long and 80m wide. How many hectares is it?
A square botanical garden with a circumference of 800 meters and an area of 0.000064 hectares?