torus

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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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NBA Lakers Celtics Finals Kevin Garnett shooting.

10 Great Sports Rivalries

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Agnes with a lamb near her feet. St. Agnes (Saint Agnes) design drawing for stained glass window by J&R Lamb Studios, ink, mount size 10.5 x 14.5 in.

Roman Catholic Saints

Chinese pictograph, calligraphy tablet of Huang Tingjian, a famous calligrapher in Ancient Song Dynasty. The background of Chinese cultural elements.

The World’s 5 Most Commonly Used Writing Systems

The Colosseum, Rome, Italy. Giant amphitheatre built in Rome under the Flavian emperors. (ancient architecture; architectural ruins)

New Seven Wonders of the World

Statue of Nostradamus

Nostradamus and His Prophecies

Flags of the countries of the world (flagpoles).

How Many Countries Are There in the World?

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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