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31 cm = 3.1 dm – wingspan of largest butterfly species Ornithoptera alexandrae; 32 cm – length of the Goliath frog, the world's largest frog; 46 cm = 4.6 dm – length of an average domestic cat; 50 to 65 cm = 5–6.5 dm – a coati's tail; 66 cm = 6.6 dm – length of the longest pine cones (produced by the sugar pine [118])
Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T
Below are two tables which report the average adult human height by country or geographical region. With regard to the first table, original studies and sources should be consulted for details on methodology and the exact populations measured, surveyed, or considered.
The tallest U.S. president was Abraham Lincoln at 6 feet 4 inches (193 centimeters), while the shortest was James Madison at 5 feet 4 inches (163 centimeters). Joe Biden , the current president, is 6 feet 0 inches (183 centimeters) according to a physical examination summary from February 2024.
A traditional unit of volume for stone and other masonry. A perch of masonry is the volume of a stone wall one perch (16 + 1 ⁄ 2 feet or 5.03 metres) long, 18 inches (45.7 cm) high, and 12 inches (30.5 cm) thick. This is equivalent to exactly 24 + 3 ⁄ 4 cubic feet (0.92 cubic yards; 0.70 cubic metres; 700 litres).
The light-nanosecond is defined as exactly 29.9792458 cm. It was popularized in information technology as a unit of distance by Grace Hopper as the distance which a photon could travel in one billionth of a second (roughly 30 cm or one foot): "The speed of light is one foot per nanosecond." [6] [7]
The remains of Madron Well Chapel The altar stone in the chapel. In 1846 the building's measurements were published in The Archaeological Journal and the roofless building's internal measurements were 20 feet (6.1 m) long by 10 feet (3.0 m) wide, and the walls are 2 feet (61 cm) thick and 8 or 9 feet (2.4 or 2.7 m) high. [3]
Coyne's World War I draft registration card, dated 29 August, gave his height as 8 ft (240 cm), although he had reached a height of 8 ft 1.7 in (2.48 m), possibly 8 feet 4 inches (254 cm) by the time of his death. 1897–1921 (23) Brahim Takioullah: Morocco: 246 cm: 8 ft 1 in [25] Possesses the world's largest feet at 38 cm (1 ft 3 in). [26]