There is no single standard here; sometimes, percentages are used (either volume or mass percentages; the numbers may be different for the same mixture, due to different densities); mass per volume (e.g., grams per liter); or moles per volume (e.g., moles per liter).
Moles per litre, molL-1 and grams per litre, gL-1 are the most commonly used units, and are very easy to use when making measurements or conversions.
If you mean the units, the most commonly used units are degrees, and radians.
The kilogram is a unit of mass.
United States customary units are a system of measurements commonly used in the United States.
The answer will depend on the units that are used for the measurements: 12x32x22. There is nothing in the question to indicate whether they are inches or feet, yards or miles, or a mix of units, or even SI units.
International System of Measurements.
Moles per litre, molL-1 and grams per litre, gL-1 are the most commonly used units, and are very easy to use when making measurements or conversions.
It is used in the measurement of mass.
If you mean the units, the most commonly used units are degrees, and radians.
cubic or cubed
The kilogram is a unit of mass.
It depends on the units used in the measurements "20x30x40"
United States customary units are a system of measurements commonly used in the United States.
That usually refers to measurements. If the international (SI) units are used, you can also say that "metric units" are used.
SI units, which is the abbreviation for International System of Units, is used for making measurements that can be understood in various countries. While most countries have no adopted SI units as their form of measurements, some countries like the United States only use them in certain areas of study.
The Imperial system of measurements, originally used in England.
Customary System was developed from English units and later modified in the United States. These are the common measurements used in the US after America declared its independence.