-- Find out the population of the area.
-- Find out the area of the area.
-- Divide the population by the area. The result
is the population density of the area.
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An arithmetic density is a population density measured as the number of people per unit area of land.
Density = Mass / Volume Rearranging this gives: Volume = Mass / Density Mass = Density × Volume
You have to know two out of three ... mass, volume, density ... then you can find the missing one. If density is missing . . . Density = (mass)/(volume) If mass is missing . . . Mass = (density) x (volume) If volume is missing . . . Volume = (mass)/(density)
The total number of objexts in an area
The integral of the density with respect to the variable against which the density is plotted, between the values at the ends of the curve. Since there is no information given as to what the density is plotted against, a more informative answer is impossible.