Archimedes was a Greek Scholar, not a discovery.
Although some have said Archimedes, my opinion is that the formulas for area and perimeter of a rectangle were well known before his time (300BC). The Babylonians in 1500BC knew how to create Pythagorean triples, so I wouldn't be surprised if they knew this. Archimedes did discover more difficult formulas, such as perimeter and area of a circle, and volume of a sphere and a cone.
yes
it was Archimedes
No he discovered density
yes
Archimedes.
discover volume and etc.
Archimedes was not the one to discover pi. It was discovered before him in vedic period of ancient India.
it was discovered in 1234
make circles and discover pi
Archimedes discovered/identified the lever, the pulley, and the screw as simple machines.