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Where does the volume/surface area formula for a sphere come from?

In my geometry class, I noticed there is no "proof" for the volume and surface area formula for a sphere. When I looked it up online, Again I found nothing. Does anyone know what evidence there is to back up these formulas?

Both formulas can be derived using calculus.

This entry was posted on Tuesday, May 25th, 2010 at 8:17 pm and is filed under area formulas. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Where does the volume/surface area formula for a sphere come from?”

  1. Both formulas can be derived using calculus.
    References :

  2. Archimedes was the first to prove it, over 2000 years ago, in Greece.
    Nowadays, the most common proofs use calculus.
    References :

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