mm (10^-3) is most common used it varies on what your measuring eg km wont measure a 50cent coin
and pm wont measure a football field
Basic Metric system
10^12 - Tera
10^9 - Giga
10^6 - Mega
10^3 - Kilo
10 - Unit
10^-1 - deci
10^-2 - centi
10^-3 - milli
10^-6 - micro
10^-9 - nano
10^-12 - pico
2.5cm is the most precise measurement of the two measurements.
Its 12.000
What determines how precise a measurement is
Since it was based on the length of a forearm, it wasn't precise enough or standardized.
It is precise if it is repeatable.
Feet
Usually in cm or inches.
measuring tape
2.5cm is the most precise measurement of the two measurements.
Its 12.000
The metric measurement that is the best estimate for the length of a car is typically in meters or centimeters. This allows for a more precise measurement compared to using larger units such as kilometers.
What determines how precise a measurement is
a mm is a tenth of a cm. This makes it a thousanth of a metre. It is a small and precise unit of measurement.
Since it was based on the length of a forearm, it wasn't precise enough or standardized.
Using millimeters would be the best option for accurately measuring the length of eggs. It provides a precise and detailed measurement compared to centimeters or inches.
Choose the one with the most decimal places.
It is precise if it is repeatable.