maybe about 2 inches
Its length.
Centimetres, obviously
9 cm
Metres.
the kilometer measurement is best suited
21 feet
All sides of all of them are the same length and are parallel to each other.
Inches or centimeters.
The measurement that best describes the results of a scientific experiment regarding volume would be by using gallons.
Depends
2 meters
9 cm
Bumper to Bumper
Short and focused
You'd measure the length of a car in metres.
inches or Millimeters.
Metres.
The word count, probably.
480 oz