a millimeter
The answer is a meter!!!!!!!!!!!
It's asking for how thick it is not the length of it. So the obvious answer is not centimeters or meters. It would be millimeter.
What metric unit would you use to measure a computer keyboard
Anything from the Metric Sysytem would be what you call a "scientific unit"
You could use any metric unit of length: e.g. meter, kilometer, decameter, megameter, femtometer, nanometer, micrometer, millimeter, centimeter. However it would probably be most logical and easiest to use the kilometer.
Millimetres
a millimeter
Milimeters
A square nanometer.
An appropriate metric unit for the mass of an eyelash would be milligrams (mg) because eyelashes are extremely light and measure in the milligram range.
Centimetres
For a cat I would use centimeters.
This question is misguided. Centimetre is a metric unit.
I would use the metric unit is inches
You best bet would probably be to use kilograms.
Grams
The best metric unit to measure the mass of an elephant would be kilograms (kg). This unit is commonly used for larger objects like elephants due to their substantial weight.