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  2. Cylinder - Wikipedia

    en.wikipedia.org/wiki/Cylinder

    The height (or altitude) of a cylinder is the perpendicular distance between its bases. The cylinder obtained by rotating a line segment about a fixed line that it is parallel to is a cylinder of revolution. A cylinder of revolution is a right circular cylinder. The height of a cylinder of revolution is the length of the generating line segment.

  3. Tun (unit) - Wikipedia

    en.wikipedia.org/wiki/Tun_(unit)

    With the adoption of the Queen Anne wine gallon of 231 cubic inches in 1706 the tun approximated the volume of a cylinder with both diameter and height of 42 inches. [nb 3] These were adopted as the standard US liquid gallon and tun. When the imperial system was introduced in 1824 the tun was redefined in the UK and colonies as 210 imperial ...

  4. Right circular cylinder - Wikipedia

    en.wikipedia.org/wiki/Right_circular_cylinder

    The equilateral cylinder is characterized by being a right circular cylinder in which the diameter of the base is equal to the value of the height (geratrix). [ 4 ] Then, assuming that the radius of the base of an equilateral cylinder is r {\displaystyle r\,} then the diameter of the base of this cylinder is 2 r {\displaystyle 2r\,} and its ...

  5. Napkin ring problem - Wikipedia

    en.wikipedia.org/wiki/Napkin_ring_problem

    The band gets thicker, and this would increase its volume. But it also gets shorter in circumference, and this would decrease its volume. The two effects exactly cancel each other out. In the extreme case of the smallest possible sphere, the cylinder vanishes (its radius becomes zero) and the height equals the diameter of the sphere.

  6. English wine cask units - Wikipedia

    en.wikipedia.org/wiki/English_wine_cask_units

    The tun is approximately the volume of a cylinder with both diameter and height of 42 inches, as the gallon was originally a cylinder with diameter of 7 inches and height of 6. [nb 3] The Queen Anne wine gallon of 231 cubic inches was adopted in 1707 and still serves as the definition of the US gallon.

  7. Volume - Wikipedia

    en.wikipedia.org/wiki/Volume

    A cone and a cylinder have radius r and height h. 2. 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. Engine displacement - Wikipedia

    en.wikipedia.org/wiki/Engine_displacement

    Engine displacement is the measure of the cylinder volume swept by all of the pistons of a piston engine, excluding the combustion chambers. [1] It is commonly used as an expression of an engine's size, and by extension as an indicator of the power (through mean effective pressure and rotational speed ) an engine might be capable of producing ...

  9. Capsule (geometry) - Wikipedia

    en.wikipedia.org/wiki/Capsule_(geometry)

    The volume of a capsule is calculated by adding the volume of a ball of radius (that accounts for the two hemispheres) to the volume of the cylindrical part. Hence, if the cylinder has height ,