An abstract, esoteric mathematical operation known as "division." Divide mass by density, and you get volume.
A note for purists: Technically speaking, specific gravity is not density, it is a ratio of densities. However, since one of the materials in the ratio is water, and its density is well known, it's easy to calculate the density of a material from its specific gravity.
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The dimension of the side in cm are required to calculate the volume (cm3) and density in g/cm3 or specific gravity of the substance is then used to calculate the mass. Mass = Volume x Density
The specific gravity is 0.5
Derive from measurements of length, breadth, height, radius, diameter etc. Measure the volume of displaced liquid when the object is submerged. If the object is of a material of known density (or specific gravity), weigh it and calculate volume from volume = mass/density.
The relative density of a substance X, relative to a substance Y isDensity of X/Density of Y= (Mass of X/Volume of X) / (Mass of Y/Volume of Y)If Y is water then the relative density is called the specific gravity.
Not enough information. To calculate mass, you would need volume and density (mass = volume x density).