Frustum
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In geometry, a frustum, is the portion of a solid that lies between two parallel planes cutting the solid. In the case of a pyramid, the base faces are polygonal and the side faces are trapezoidal. A
Sound Catcher, Neringa, Lithuania
Moscow Mathematical Papyrus
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The Moscow Mathematical Papyrus, also named the Golenishchev Mathematical Papyrus after its first non-Egyptian owner, Egyptologist Vladimir Golenishchev, is an ancient Egyptian mathematical papyrus co
Frustum
…cone,pyramid,and bifrustum The formula for the volume of a pyramidal square frustum was introduced by the ancient Egyptian mathematics in what is called the Moscow Mathematical Papyrus, written in the 13th dynasty (c. 1850 BC): where a and b are the base and top side lengths, and h is the height…
14th problem of the Moscow Mathematical Papyrus (V. Struve, 1930)
Pyramide tronquée papyrus Moscou 14