How do find mass of a cuboid when density is not given?

To find the mass of a cuboid without a given density, you can measure its dimensions (length, width, and height) and calculate its volume using the formula ( V = \text{length} \times \text{width} \times \text{height} ). Once you have the volume, you need to obtain the density of the material from an external source, such as a reference table or database. Finally, you can calculate the mass using the formula ( \text{mass} = \text{density} \times \text{volume} ). Without density, mass cannot be determined directly.