Question

A cube-shaped piece of copper has sides of 4cm each and it's density is

2.7 g.cm^3. What is the VOLUME of the piece of copper? *
O 12 cm^3
O 64 cm^3
8 cm^3
O 6.7 cm^3

Answer 1

`64 cm^3`

Step-by-step explanation:

Density

The density of a substance is the mass per unit volume. The density varies with temperature and pressure.

The formula to calculate the density of a substance of mass (m) and volume (V) is:

`\displaystyle \rho=(m)/(V)`

We have a cube-shaped piece of copper of 4 cm of side length. The volume of the piece is:

`V=(4\ cm)^3=64\ cm^3`

Surprisingly, no other magnitude is required, thus the answer is:

`\mathbf{64 cm^3}`