The SI unit of measure for volume is the 'Litre'.
You use for example cm3. So yeah, use the little three at the end since the shape has three dimensions.
A ruler or meter stick can be used to measure a rectangular prism. Just measure and plug into L*W*H=Volume
Kilogram Volume?
liters
The basic unit of volume is the cubic metre. In everyday use, the litre is more common.
mL
You don't use a unit of mass to measure a volume. Mass and volume are two different things. Mass is measured in kilograms. The main unit of volume in the SI is the cubic meter, but for a kettle, the liter (= cubic decimeter, or 1/1000 of a cubic meter) can be used instead.
Liter
You would use Volume.
mililiters
milliliter
millilitres
mililiter
Kilogram Volume?
you would use centimetres to measure the volume for a slice of bread
Mass divided by Volume!!
liters
Litres.
The basic unit of volume is the cubic metre. In everyday use, the litre is more common.