Question

what is called density ? write its formula and unit​

Answer 1

The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: where ρ is the density, m is the mass, and V is the volume.

Density = Mass/volume

Answer 2

Density is a measurement that compares the amount of matter an object has to its volume. An object with much matter in a certain volume has high density. ... Density is found by dividing the mass of an object by its volume.

The Density Calculator uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). The calculator can use any two of the values to calculate the third. Density is defined as mass per unit volume.The SI unit of density is kg/m3. Water of 4 °C is the reference ρ = 1000 kg/m3 = 1 kg/dm3 = 1 kg/l or 1 g/cm3 = 1 g/ml. Attention: Do not re-enter the exact number of an answer. Many people still use g/cm3 (gram per cubic centimeter) or kg/L (kilograms per liter) to measure density.