depends on the shape of the cup... if it has a round bottom i would use the formula for calculating the volume of a cylinder: Volym = π · r² · h
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A common instrument that can measure both mass and volume is a laboratory balance. The balance can measure the mass of an object by comparing it to calibrated weights, while volume can be indirectly determined by measuring the displacement of a liquid when the object is submerged.
To calculate the mass of a cuboid, you would multiply its volume by the density of the material it is made of (mass = volume x density). The volume of a cuboid can be found by multiplying its length, width, and height. The density of the material can be looked up or measured.
Water displacement method will work fine with molecules that do not dissolve... Here you have something that will dissolve in water, changing it's density. What I would do is to weight a graduated container, put some sugar (more you add, more precise will be the result) in the container... Better weight the container before... Weight the container after. Now you know the *weight* part of the answer, then you melt it, in that container... you read the *volume* part of the answer. put the part together to have a density which is mass/volume g/cm³ for example, or g/mL, which is the same.
You cannot directly convert inches to kilograms as they are units measuring different things (length and mass). Inches measure length, while kilograms measure mass.
A person's mass remains the same in outer space because mass is a measure of the amount of matter an object contains. However, their weight, which is a measure of the force of gravity acting on them, would be different in outer space because there is less gravity.
The number of grams in 1 liter depends on the substance being measured because different substances have different densities. To convert liters to grams, you need to know the density of the substance in question. The formula for converting volume to mass (in grams) is mass = volume x density.