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Pappus's theoremPappus's theorem proves that the volume of the solid torus obtained by rotating the disk of radius a around line L that is b units away is (πa2) × (2πb) = 2π2a2b cubic units.

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torus

mathematics

Learn about this topic in these articles:

role in Riemannian geometry

In mathematics: Riemann
…of complex functions on a torus.)
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