The answer depends on
Newtons
The basic metric unit for electrical power measurement is the watt, which is equal to one joule per second.
That would normally be measured in cm. It might also be measured in dm., but this unit is not very common in daily usage.
Yes. A millimeter is simply a thousandth of a meter, which is the metric unit of length.
The English system is measured in units of yards. Meter unit length in the metric system.
The kilogram.
The metric unit of potential energy is the joule (J).
The metric unit for an elephant's weight is typically measured in kilograms (kg).
cenimeter
The appropriate metric unit is a kilogram.
The metric volume of a sink would be measured in litres.
the metre, or specifically a centimetre
Newtons
The metric volume of a sink would be measured in litres.
the area of a large estate is measured in hectares
The basic metric unit for electrical power measurement is the watt, which is equal to one joule per second.
Mass is measured in kilograms.