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.
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.