Measuring a penny in millimeters is preferable because it provides a more precise and suitable scale for its small size. A penny has a diameter of about 19 millimeters, which makes millimeters a more practical unit for accurately conveying its dimensions without decimal points or fractions that would be necessary in centimeters or meters. This precision is particularly important in contexts like manufacturing or quality control, where small variations can be significant.
Meters.
CM
630 centimeters and 6300 millimeters
0.008 millimeters is not equivalent. There are 1000 meters in a kilometer, 100 centimeters in a meter, and 10 millimeters in a centimeter. So the equivalent value in millimeters would be 800 mm.
You should use a ruler to measure a fork. Once you have the measurement, it's probably most convenient to describe it in units of centimeters or millimeters, but meters will also work just fine.
Centimeters or Meters. I'm not sure which.
Meters.
CM
You can measure the length of your arm in centimeters or millimeters. To convert this measurement to meters, you would divide by 1000 for millimeters or 100 for centimeters. The other units like decimeters, kilometers, and decameters are not typically used for measuring the length of a human arm.
You use anything with markings of kilometers,meters,millimeters or centimeters.
If you have three measurements of length (meters, centimeters, millimeters) and you multiply them together, you will end up with a measure of volume (liters). Of course, if you were to actually do this, you would want to convert all of the lengths into a common unit (convert centimeters and millimeters to meters or convert meters and centimeters to millimeters).
9000 millimeters: 9 meters, 900 centimeters 8389 cm: 83.89 meters, 8389 centimeters
You would typically use a measuring tape or a ruler to measure the length of a school hallway in meters, centimeters, or millimeters. If you need to measure longer distances in kilometers, you might use a measuring wheel or a GPS device.
630 centimeters and 6300 millimeters
Centimeters, meters, millimeters, feet, inches, etc.
34 millimeters is equivalent to 3.4 centimeters or 0.034 meters
A ruler is used to measure distances. Feet, inches, meters, centimeters, and millimeters.