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List of formulae involving π : ウィキペディア英語版 | List of formulae involving π
The following is a list of significant formulae involving the mathematical constant . The list contains only formulae whose significance is established either in the article on the formula itself, the article Pi, or the article Approximations of . ==Classical geometry==
: where is the circumference of a circle, is the diameter.
: where is the area of a circle and is the radius.
: where is the volume of a sphere and is the radius.
: where is the surface area of a sphere and is the radius.
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