Density is the amount of mass per unit of volume. Density = mass/volume
Mass is the amount of matter in a sample.
Length is the longest extent of anything as measured end to end.
Volume is the amount of three-dimensional space occupied by a solid, liquid, or gas.
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Unit of length is m and that of mass is kg Now volume is length x length x lenght. SO volume would have the unit mxmxm = m3 Density = mass / volume So unit for density = kg /m3
Density = Mass/Volume So for a rectangle, find its mass, then its volume (using length x height x depth).
Volume = mass / Density Mass = Volume * Density Density = Mass / Volume
Density = mass/volume Mass = (density) x (volume) Volume = mass/density
since density equal to mass/volume then mass=density times volume mathematically mass=density *volume