Meter, kilometer is the SI equivalent to the mile.
km
Km
a meter?
The 'foot' or the 'meter' would both do nicely.
It depends on the relative height of the flagpole. If it's short, like a flag mast on a boat or building, probably feet and inches would do. If it's very tall, like the flagpole on top of a building or monument, yards and feet might be more appropriate.
The meter.
Decimeters or Inches
I would use Meters
6 m would be used to measure flagpole. 600 m is a bigger unit.
Metres.
One of length. I'd go for Metres and Centimetres but you could use Feet and/or Yards. Or declare a new unit of "Flagpole" which is exactly one flagpole long....
the units that are used to measure a foot are meters and inches.
a meter?
meter
Meter
The basic metric unit of measure for length is the meter (m).
The meter.
A meter is a unit of measure. It is part of the metric system and the base unit.
gram is the unit for mass, out of your choices.