The volume of the bottle would be in litres.
The metric units would be centimeters. The formula would be the length X width X height.
The units used would usually be liters, or sometimes milliliters. That's a measure of volume; if it is the mass you want, you would measure in kilograms.
You would have to convert the units to be alike, then you would be able to add and subtract them.
We would have to change all of our instruments to metric units. Plus, some people aren't used to the metric system.
Non-metric is inches. I'd assume metric would be centimeters.
Gallons (standard) or liters (metric).
you would use kilograms
"Mi" probably stands for "miles," which are not metric units; if it were "m" it would stand for "meters," which are.
There is only one metric system. The units used for your weight would be Newtons.
Feet are a measurement in the Imperial system. If she was using Metric it would be in meters, not feet.
It would probably be miles.
you would use milligrams. i think
metres and centimetres