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Subdivisions of an inch are typically written using dyadic fractions with odd number numerators; for example, two and three-eighths of an inch would be written as 2 + 3 / 8 ″ and not as 2.375″ nor as 2 + 6 / 16 ″. However, for engineering purposes fractions are commonly given to three or four places of decimals and have been ...
[2] [3] [4] The factor–label method is the sequential application of conversion factors expressed as fractions and arranged so that any dimensional unit appearing in both the numerator and denominator of any of the fractions can be cancelled out until only the desired set of dimensional units is obtained.
A ratio is often converted to a fraction when it is expressed as a ratio to the whole. In the above example, the ratio of yellow cars to all the cars on the lot is 4:12 or 1:3. We can convert these ratios to a fraction, and say that 4 / 12 of the cars or 1 / 3 of the cars in the lot are yellow.
ounce (avoirdupois) per cubic inch oz/in 3: ≡ oz/in 3: ≈ 1.729 994 044 × 10 3 kg/m 3: ounce (avoirdupois) per gallon (imperial) oz/gal ≡ oz/gal ≈ 6.236 023 291 kg/m 3: ounce (avoirdupois) per gallon (US fluid) oz/gal ≡ oz/gal ≈ 7.489 151 707 kg/m 3: pound (avoirdupois) per cubic foot lb/ft 3: ≡ lb/ft 3: ≈ 16.018 463 37 kg/m 3 ...
Countries using the metric system tend to use lines per centimeter (L/cm). In order to convert between L/in and L/cm the following formulas can be used: Lines per inch to lines per cm: L/cm = 0.394 x L/in i.e. 254 L/in = 100 L/cm Lines per cm to lines per inch: L/in = 2.54 x L/cm i.e. 100 L/cm = 254 L/in
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[3] The current international standard for the metric system is the International System of Units (Système international d'unités or SI). It is a system in which all units can be expressed in terms of seven units. The units that serve as the SI base units are the metre, kilogram, second, ampere, kelvin, mole, and candela.
2.54 cm – 1 inch; 3.08568 cm – 1 attoparsec; 3.4 cm – length of a quail egg [112] 3.5 cm – width of film commonly used in motion pictures and still photography; 3.78 cm – amount of distance the Moon moves away from Earth each year [113] 4.3 cm – minimum diameter of a golf ball [114] 5 cm – usual diameter of a chicken egg