It would be yards.
Any metric unit would do. But it might be easier to pick something smaller than the length of the pencil, like a centimeter, or a millimeter.
In the US, I would use yards.
it depends. If you were mesuring length then you would use meters. If you were measuring volume you would use cubic meters. If you were measuring weight you would use metric tons.
Usually, you would use kilometers.
metres or kilometres
millimeter, centimeter, meter, kilometer.
Yards Actually meters is the metric unit, yards in an English Unit of measurement.
The length of an official soccer field is between 90 and 120 meters. How much you ran would depend on the size of the field.
I would use meters
Yards, feet or metres
Metres, to measure its length or width, square metres to measure its area.
The length of an aeroplane would be measured in metres.