What was the original use of the sphere and who named it?

I need to know the origins of the geometrical shapes.

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It is unknown who actually coined the word "sphere". Technically speaking, sphere refers only to the 2-dimensional shape. "Ball" should be the word used to describe the inner portions of it.

Archimedes was the first to give equations to find where a sphere should be plotted on the Cartesian plane.

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