You would use mm. For the same reason you use feet instead of miles to measure the height of a building.
Centimeter
0 - 1 inch Micrometer might be better to measure 10 pages and find the average.
Thickness is measured in units of length. You'd have to choose the one that gives a reasonable number corresponding to whatever you're measuring the thickness of. If it's the thickness of a hair, you'd probably select a sub-multiple of a meter. If it's the thickness of the atmosphere, you might select the kilometer. If it's the thickness of country gravy, that's a whole different story.
You would most likely measure a ribbon in inches for a small project. If you are talking about longer pieces, such as the amount on a roll, you could measure in feet or yards.
That depends on which aspect of the cube you are measuring and the size of the cube.. If you are measuring the dimensions, you might use meters. If you are measuring the surface area, you might use square meters. If you are measuring the volume, you might use cubic meters.
Typically you might use "mm" for coins. For currency, I would suggest micron units.The millimeter.
"Thickness" is a length or distance. The SI unit for length or distance is the meter. In order to produce a convenient number when you're talking about the thickness of a piece of paper, you'll probably want to use one of the meter's sub-multiples, such as the centimeter or millimeter. For tissue or 'onionskin', you might even go to the micrometer.
deceptive mesurment
Centimeter
The word is "centimeter" - a centimeter is 1/100 of a meter. A centimeter or a meter are units of length - you might use it to measure the length of your desk, your height, etc. A cubic centimeter, like any cubic measure, is a measure of volume. For example, you might use it to calculate the amount of liquid a cup or a jar can hold.
0 - 1 inch Micrometer might be better to measure 10 pages and find the average.
Thickness is measured in units of length. You'd have to choose the one that gives a reasonable number corresponding to whatever you're measuring the thickness of. If it's the thickness of a hair, you'd probably select a sub-multiple of a meter. If it's the thickness of the atmosphere, you might select the kilometer. If it's the thickness of country gravy, that's a whole different story.
Any metric unit would do. But it might be easier to pick something smaller than the length of the pencil, like a centimeter, or a millimeter.
Many options exist. You might measure the length in inches or centimeters. A better choice might be "shoe size".
We would use a ruler to measure the length of a rock. Then, when we were ready to write down the result of the measurement, or tell someone else about it, we would pick the best unit of length to use. The best one would be the unit that results in the most convenient number. For a tiny rock, the "millimeter" might be best. For a medium rock, the "centimeter" might be best. For a large rock, the "meter" might be best. A really humongous rock, such as the moon, might warrant the use of the "kilometer".
You would most likely measure a ribbon in inches for a small project. If you are talking about longer pieces, such as the amount on a roll, you could measure in feet or yards.
Neither one. A decigram measures how much a certain container holds, while a centimeter measures the length of something. For instance, you might have a small glass that holds 92 decigrams of motor oil, and the height of that glass might measure 11 centimeters. (Or any of a range of measurements.)