usually kilometers
The distance between towns is commonly measured in miles or kilometers.
A kilometre would be the most appropriate unit.
The best unit of measurement for the measuring the distance between two towns would be miles. You could also use kilometers if you want, but anything smaller than miles or kilometers would make getting the correct measurement difficult.
A calculator would be between 100 and 150 millimetres.
The length of an aeroplane would be measured in metres.
Meters should be used to measure the length of a tennis court in metric units.
I would use centimetres.
Length->metersVolume->LitersMass->grams
No, feet is not a metric unit. It is a unit of length commonly used in the imperial system of measurement. In the metric system, the equivalent unit of length is the meter.
You would use meters for measuring length in the metric system, which is the standard unit for length. Inches are used in the imperial system for measuring length.
Millimetres
Centimetre