Without specialized equipment, it is impossible to measure a substance's density directly. However, density can be calculated by first weighing and then finding the volume of an item.
Place the item on an accurate scale, and record the mass in grams.
If the item is a regular shape like a cube, volume can be calculated using a mathematical formula. If the item is an irregular shape, it must first be broken down into regular shapes before the volume can be calculated. Record the volume in cubic centimeters.
To find the density of the item, divide the mass by the volume to determine density in units of grams per cubic centimeter.
Different types of food provide differing amounts of energy depending upon the proportion of specific macronutrients. In foods, energy is measured in calories. Energy density is defined
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1 Distinguish between volume and density. Volume (v)  It's the space occupied by an 3dimensional object enclosed by a close boundary. Density (ρ)  It's simply mass/unit volume
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It is calculated by dividing the population by the area.Therefore, you would need to have the number of people in the numerator(on the top of the fraction) and the number of square
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If density equals mass divided by volume, and we can find the mass
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