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  2. Cannonball problem - Wikipedia

    en.wikipedia.org/wiki/Cannonball_problem

    This is comparable with the 24th square pyramid having a total of 70 2 cannonballs. [5] Similarly, a pentagonal-pyramid version of the cannonball problem to produce a perfect square, would have N = 8, yielding a total of (14 × 14 = ) 196 cannonballs. [6] The only numbers that are simultaneously triangular and square pyramidal are 1, 55, 91 ...

  3. Square pyramid - Wikipedia

    en.wikipedia.org/wiki/Square_pyramid

    A square pyramid has five vertices, eight edges, and five faces. One face, called the base of the pyramid, is a square; the four other faces are triangles. [2] Four of the edges make up the square by connecting its four vertices. The other four edges are known as the lateral edges of the pyramid; they meet at the fifth vertex, called the apex. [3]

  4. Frustum - Wikipedia

    en.wikipedia.org/wiki/Frustum

    The volume of a conical or pyramidal frustum is the volume of the solid before slicing its "apex" off, minus the volume of this "apex": =, where B 1 and B 2 are the base and top areas, and h 1 and h 2 are the perpendicular heights from the apex to the base and top planes. Considering that

  5. Egyptian geometry - Wikipedia

    en.wikipedia.org/wiki/Egyptian_geometry

    Such a formula would be needed for building pyramids. In the next problem (Problem 57), the height of a pyramid is calculated from the base length and the seked (Egyptian for slope), while problem 58 gives the length of the base and the height and uses these measurements to compute the seked.

  6. List of Formula One circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_Formula_One_circuits

    The first World Championship Grand Prix was held in 1950 at Silverstone; since then 77 circuits in total have hosted a Grand Prix.A lot of classic (older) circuits have hosted Grands Prix using different configurations throughout their history: Nürburgring, Spa-Francorchamps, Monza, etc. Taking Nürburgring as an example, the first World Championship race there used the 22.835 km (14.189 mi ...

  7. Cavalieri's principle - Wikipedia

    en.wikipedia.org/wiki/Cavalieri's_principle

    The volume ratio is maintained when the height is scaled to h' = r √ π. 3. Decompose it into thin slices. 4. Using Cavalieri's principle, reshape each slice into a square of the same area. 5. The pyramid is replicated twice. 6. Combining them into a cube shows that the volume ratio is 1:3.

  8. Pyramidal number - Wikipedia

    en.wikipedia.org/wiki/Pyramidal_number

    Geometric representation of the square pyramidal number 1 + 4 + 9 + 16 = 30. A pyramidal number is the number of points in a pyramid with a polygonal base and triangular sides. [1] The term often refers to square pyramidal numbers, which have a square base with four sides, but it can also refer to a pyramid with any number of sides. [2]

  9. File:Spielberg track map with numbers.svg - Wikipedia

    en.wikipedia.org/wiki/File:Spielberg_track_map...

    English: A map of the Spielberg motor circuit in Styria, Austria. The corner numbers, start-finish line, and the ends of the sectors used in the 2021 Formula One Grands Prix are labelled. The image is displayed in a colour palette selected for its relative colour-blindness friendliness.