WORLD HISTORY

Detailed explanation-1: -Archimedes found that the volume of a sphere is two-thirds the volume of a cylinder that encloses it. He also discovered a law of buoyancy, Archimedes’ principle, that says a body in a fluid is acted on by an upward force equal to the weight of the fluid that the body displaces.

Detailed explanation-2: -Pulleys date back at least to Archimedes (287 BC-212 BC), the great Greek mathematician, physicist, and engineer. He designed a block-and-tackle system to move massive ships. Pulley systems allow us to lift a load by using a force that is less than the weight of the load.

Detailed explanation-3: -Archimedes of Syracuse (/ˌɑːrkɪˈmiːdiːz/; c. 287 – c. 212 BC) was a Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily.

Detailed explanation-4: -(287-212 B.C.) Archimedes was a Greek philosopher, mathematician and inventor, who wrote about geometry and mechanics. He was born in Syracuse, Sicily, and educated in Alexandria, Egypt. Archimedes defined the principle of the lever and invented the compound pulley.