The basic metric unit for length is the metre. Rivers would be measure in kilometres (1,000s of metres)
Kilometres
millimeters
The answer depends on which characteristic you wish to measure: its diameter, volume, mass, weight, etc.
Dude what the hec
Fahrenheit is a customary unit
We can measure how long things are , how tall,or how far apaart they are .Those are examples of length meaasurements. The basic unit of length is meters.
The appropriate unit is grams.
Miles.Miles.Miles.Miles.
Probably Centimeters
Inches.
centimeters or cm in the metric system or SI and in the customary inches or in.
what is the customary unit of length
miles or kilomiters
Metre (for its length). Kilometres per hour (speed) Tonnes (Mass)
A customary unit of length, which has 4 letters and starts with m, is mile.
The width of a river will generally be measured in feet or meters, depending on if you use Imperial or Metric.
inches
no
It depends on the length that you wish to measure: a mile, furlong, chain, fathom, yard, foot, inch are all possibilities.