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The formula for calculating density is as follows: density = mass/volume. Simply put, if you divide an object's mass by its volume, you will find its density. Density is the mass of an object per unit volume.
To find the volume of an object use the formula v=dm where Volume=Density x Mass To find the mass of an object use the formula m=dv where Mass=Density x Volume
To find the density of and object we must first know both its mass and its volume, then density can be calculated using the formula d=m/v. In this case we do not know the volume but we do know the object's length, bredth and height. The volume can then be be calculated using the formula V= l*b*h This gives a volume of 18 cm3. Using the following information we can now calculate the object's density. m=36 v=18 36/18=2 Density= 2 g/cm3 (grams per cubic centimetre)
calculate the volume using the formula: Vsphere = (4/3)*pi*r^3 then calculate density by Density = Mass/Volume
Mass = Density -------- volume