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  2. Polyhedron - Wikipedia

    en.wikipedia.org/wiki/Polyhedron

    The surface area of a polyhedron is the sum of areas of its faces, for definitions of polyhedra for which the area of a face is well-defined. The geodesic distance between any two points on the surface of a polyhedron measures the length of the shortest curve that connects the two points, remaining within the surface.

  3. Dimensional analysis - Wikipedia

    en.wikipedia.org/wiki/Dimensional_analysis

    A simple application of dimensional analysis to mathematics is in computing the form of the volume of an n-ball (the solid ball in n dimensions), or the area of its surface, the n-sphere: being an n-dimensional figure, the volume scales as x n, while the surface area, being (n − 1)-dimensional, scales as x n−1.

  4. Orders of magnitude (area) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(area)

    Surface area of a Dyson sphere with a radius of 1 AU 10 24: 1 yotta square meter (m 2) 1 square terametre (Tm 2) 1.9 Tm 2: Area swept by Jupiter's orbit around the Sun 6.4 Tm 2: Area swept by Saturn's orbit around the Sun 8.5 Tm 2: Surface area of the red supergiant star Betelgeuse: 10 25 24 Tm 2: Surface area of the hypergiant star VY Canis ...

  5. Circle - Wikipedia

    en.wikipedia.org/wiki/Circle

    The circle is the shape with the largest area for a given length of perimeter (see Isoperimetric inequality). The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle. Its symmetry group is the orthogonal group O(2,R).

  6. 10.2 surround sound - Wikipedia

    en.wikipedia.org/wiki/10.2_surround_sound

    10.2 is the surround sound format developed by THX creator Tomlinson Holman of TMH Labs and the University of Southern California (schools of Cinematic Arts and Engineering). Developed along with Chris Kyriakakis of the USC Viterbi School of Engineering , 10.2 refers to the format's slogan: "Twice as good as 5.1".

  7. Fairchild Republic A-10 Thunderbolt II - Wikipedia

    en.wikipedia.org/wiki/Fairchild_Republic_A-10...

    A-10C combat exercise at Nevada Test & Training Ground against hard targets. The A-10's primary built-in weapon is the 30×173 mm GAU-8/A Avenger autocannon. One of the most powerful aircraft cannons ever flown, the GAU-8 is a hydraulically driven seven-barrel rotary cannon designed for the anti-tank role with a high rate of fire.

  8. 12 (number) - Wikipedia

    en.wikipedia.org/wiki/12_(number)

    12 (twelve) is the natural number following 11 and preceding 13.. Twelve is the 3rd superior highly composite number, [1] the 3rd colossally abundant number, [2] the 5th highly composite number, and is divisible by the numbers from 1 to 4, and 6, a large number of divisors comparatively.

  9. Ice rink - Wikipedia

    en.wikipedia.org/wiki/Ice_rink

    The curling sheet is a carefully prepared rectangular area of ice created to be as flat and level as possible. The ice surface dimensions are 146 to 150 feet (45 to 46 m) in length by 14.5 to 16.5 feet (4.4 to 5.0 m) in width.