The basic metric unit for length is the metre. Rivers would be measure in kilometres (1,000s of metres)
what unit would you the length of a shoe? mm,cm,dm,m, or km.
How much a bicycle what? Weighs, cost, take up space?
Kilometres are the appropriate unit.
The metric unit of the meter would be the appropriate measure of the area of classroom. Calculating area involves multiplying the length (in meters) of the classroom's length and width. Area of the classroom would be in square (^2) meters.
By unit of length and distance and conversion ,we can say that the most appropriate unit to measure the length of a finger is cm.
Inches
cm
I would use feet
You would use meters.
yards
centimeter
You would use the SI unit meter (m) to measure the length of a DVD case.
miles or kilomiters
feet
inch
miles