An object has a mass of 180 kg and a volume of 90 m3. What is its density?
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Given: Mass = 180 kg, Volume = 90 m^3
Formula for Density = m/v
Density is known as the ratio between the mass and volume of matter or the degree of packing of materials in matter.
Solution:
d = 180 kg/90 m^3
d = 2 kg/m^3
If expressed in grams and centimeter, convert first 180 kg into grams by multiplying it by 1000, since 1 kg is equal to 1000 grams. Next convert cubic meters to cubic centimeters, 1 cubic meter is equal to 1x10^6 cubic centimeter.
180 kg = 180,000 grams
90 m^3 = 9 x 10^7 cm^3
d= 180,000 g / 9 x 10^7 cm^3
d= 0.002 g/cm^3