A global positioning system (GPS)
To measure the distance between Chicago and Miami it would be appropriate to work in miles, since the US generally uses imperial measurements. However, it would also be appropriate to also list the kilometer equivalent to the mile measurement, since a person accessing the data might be more familiar with the metric system of measurement.
Kilometers
Any of those units could be used. 'Kilometers' would result in the most convenient number.
Inches. Just kidding, miles.
The most appropriate unit of length for measure the distance between Las Vegas and Los Angeles would be either miles or kilometers.
Miles
The most appropriate unit of length for measure the distance between Las Vegas and Los Angeles would be either miles or kilometers.
miles or kilometers
Yard
kilometers (millions) or AU
If you are talking about kilometres of distance, then it would be very messy to have ,000,000 after every number
The appropriate measure to record the distance to the closest mall from your house would be in either miles or kilometers, depending on your location and preference. You can use GPS tools or online mapping services to calculate the exact distance.