Input (grade 7): Areas less than 100 km2 100 km2 is equal to: 1 E +8 m ² a square with sides 10 km long 10,000 hectares approx.
Output (grade 4): 100 km ² is equal to: 1 E +8 m ² a square with sides 10 km long 10,000 hectares approx.