That would normally be measured in cm. It might also be measured in dm., but this unit is not very common in daily usage.
Miles or kilometers
Square kilometres.
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An unsharpened pencil is often referred to simply as a "pencil." In some contexts, it might be called a "new pencil" or a "blunt pencil," indicating that it has not yet been sharpened for use.
6 inches
An average pencil when new would be around 15 centimetres long.
The name phot was coined in 1921 by Andre Blondel. The term is a metric that is used to measure illuminance. The unit is not always used and is still relatively new.
halve
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140 millimeters
Square kilometres.
Miles or kilometers
Miles or kilometres.
New pencil
I think Miles
A new(ish) pencil, a keyboard, a sheet of A4 paper.A new(ish) pencil, a keyboard, a sheet of A4 paper.A new(ish) pencil, a keyboard, a sheet of A4 paper.A new(ish) pencil, a keyboard, a sheet of A4 paper.
Yes indeed. One needs a new unit of measurement when the subject being considered cannot be measured in terms of the existing units, OR when it is more convenient to use a new scale. In practice we need a new unit of measure when we need to measure Height and we only have Length so far. Conveniently, the scalar (the actual scale measure) can be the same. OK until we meet Time, which we cannot measure in terms of length, height and width. So our new unit is the second - with its definition. And when we come to measure Temperature (oC), or Sound Level (dB), Intellectual Quotient (IQ), ... ... we have to use more convenient or new units.