2.6 - 2.9 g/cm3.
Cobb, F. (2009) Structural Engineer's Pocket Book. 2nd Edition. Butterworth-Heinemann, Oxford.
divide the mass over the volume and the answer is 2.3 D=M over V D=23 over 10=2.3.
Denisty = mass/volume. 13/5 and then convert your units as need be.
Mass is a meause of density times volume. Therefor, mass= density x volume, and density = mass/volume. You divide 243 into 994. The answer to your question is approximately 4.13 grams per cubic cm.
You need to know the density of the marble.
Density is mass per unit volume. More marbles is more mass, but will be more volume as well. If the marbles are all the same, any number of them will have the same density, which is 2.5 grams/cm3. This is a "thinking" problem rather than a "calculation" problem.
According to your own question, the density is 2.55 grams per cm3. So why ask?
It is 2.5 grams per mL.
Density = Mass/Volume = 3.050/[4/3*pi*r3] = 2.91 grams/cm3
Density = Mass/Volume = 853/310 = 2.75 grams per cm3, approx.
Density = Mass/Volume = 962/350 = 2.7485 grams per cubic centimeter
Density = Mass/Volume = 863 g/321 cc = 2.688 grams per cm3
448/168 = 2.666 (rounded, repeating)
The density of the marble is about 4.94 g/cm3
Marble has a specific gravity of 2.56.
divide the mass over the volume and the answer is 2.3 D=M over V D=23 over 10=2.3.
Denisty = mass/volume. 13/5 and then convert your units as need be.
Osmium has a density of 22.61 grams. Iridium has a density of 22.56 grams. Mercury has a density of 13.6 grams.