We've learned that the volume of a cuboid is its length multiplied by its width multiplied by its height (\(l \times w \times h\)). The area of the green shaded end of the cuboid (the cross section) ...

The units of density depend on the units used for mass and volume. The most commonly used units are grams per cubic centimetre (g/cm³) or kilograms per cubic metre (kg/m³). These balloons are the same ...