Who is Archimedes and why is he so important?

Who Archimedes is:

DescriptionArchimedes of Syracuse was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity.

Why he's important:

Archimedes is especially important for his discovery of the relation between the surface and volume of a sphere and its circumscribing cylinder.

Archimedes is the most famous mathematician and inventor from Greece. He is important because he discovered the relation between the surface and volume of a sphere and its circumscribing cylinder.