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  2. Orders of magnitude (length) - Wikipedia

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

    An adult human foot is about 28 cm (11 in) long. ... The Strait of Gibraltar is 13 km (8.1 mi) wide. To help compare different orders of ... 10 kmheight of Mauna ...

  3. Average human height by country - Wikipedia

    en.wikipedia.org/wiki/Average_human_height_by...

    Below are two tables which report the average adult human height by country or geographical region. With regard to the first table, ... 163.9 cm (5 ft 4 + 1 ...

  4. Human - Wikipedia

    en.wikipedia.org/wiki/Human

    It is estimated that the worldwide average height for an adult human male is about 171 cm (5 ft 7 in), while the worldwide average height for adult human females is about 159 cm (5 ft 3 in). [158] Shrinkage of stature may begin in middle age in some individuals but tends to be typical in the extremely aged . [ 159 ]

  5. Arm span - Wikipedia

    en.wikipedia.org/wiki/Arm_span

    Arm span or reach (sometimes referred to as wingspan, or spelled armspan) is the physical measurement of the length from one end of an individual's arms (measured at the fingertips) to the other when raised parallel to the ground at shoulder height at a 90° angle. The arm span measurement is usually very close to the person's height.

  6. Historical Russian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Historical_Russian_units...

    30.48 cm 1 ft локоть: lokot' elbow 9 ⁄ 14: 45.72 cm 1 + 1 ⁄ 2 ft; cf. cubit/ell: шаг: shag stride, step 1 71.12 cm cf. step: арши́н: arshin: yard 1 71.12 cm 2 + 1 ⁄ 3 ft саже́нь, са́жень: sazhen' fathom: 3 2.1336 m 7 ft верста́: vyersta turn (of a plough) 1500 1.0668 km 3,500 ft ми́ля: milya mile ...

  7. Italian units of measurement - Wikipedia

    en.wikipedia.org/wiki/Italian_units_of_measurement

    1 palmo mercantile † = 24.908 cm [16] 1 palmo architettonica # = 22.319 cm [16] 1 palmo d'ara = 12.500 cm [16] 1 once # = 10 decimi [19] 1 pie # (foot) = 16 once = 11.72 in [19] 1 pié = 11.592 in [19] 1 braccia da mercante † = 67 cm [8] 1 braccia par le tele ‡ = 63.5 cm [8] 1 braccia d'ara = 75 cm [8] 1 canna = 78.4 in [19] 1 canna ...

  8. Inch - Wikipedia

    en.wikipedia.org/wiki/Inch

    A fire hydrant marked as 3-inch. The inch (symbol: in or ″) is a unit of length in the British Imperial and the United States customary systems of measurement.It is equal to ⁠ 1 / 36 ⁠ yard or ⁠ 1 / 12 ⁠ of a foot.

  9. String girdling Earth - Wikipedia

    en.wikipedia.org/wiki/String_girdling_Earth

    The answer is that a cat will easily pass through the gap, the size of which will be ⁠ 1 / 2 π ⁠ metres or about 16 cm (6.3 in). Even more surprising is that the size of the sphere or circle around which the string is spanned is irrelevant, and may be anything from the size of an atom to the Milky Way — the result depends only on the ...