Question

Fat cells in humans are composed almost entirely of pure triglycerides with an average density of about 900 kg/m3.
If 20% of the mass of a 70 kg student's body is fat (a typical value), what is the total volume of fat in his body?

Answer 1

Answer: Total volume of fat in his body is $0.015m^3$

Explanation:

Density is defined as the mass contained per unit volume.

$Density=\frac{mass}{Volume}$

Given:

Density of fat cells = $900kgm^{-3}$

mass of fat cells = 20% of the mass of a 70 kg student's body is fat= $\frac{20}{100}\times 70=14kg$

Volume of fat = ?

Putting in the values we get:

$900kgm^{-3}=\frac{14kg}{volume}$

$Volume=0.015m^3$

Thus total volume of fat in his body is $0.015m^3$