ft² → m²
The Roman "actus quadratus" (square actus) was used for land measurement around 200 BCE. Medieval farming created the acre.
The Louisiana Purchase in 1803 transferred 828,000 square miles for just $15 million - about 3 cents per acre!
Ancient Egyptian land surveys from 3000 BCE show sophisticated area calculations using rope stretching techniques after Nile floods.
Satellite imagery can calculate area measurements of forests, cities, and farms with incredible accuracy from space.
What do you call a square kilometer that tells jokes? A square mirth! 🤣