What are Square Kilometers?
A square kilometer is the area of a square with sides 1 kilometer long, which is 1,000,000 square meters or 100 hectares. Australia covers about 7.7 million of them.
What are Square Feet?
Square feet are units of measurement used to quantify area in the English/ Imperial system. Square feet is a unit commonly used in the imperial and US customary systems.
A square foot is a unit of area equal to a square with sides that are each one foot long. It is often used to measure the size of rooms, houses, and small plots of land.