Question

The properties of a cube are listed below:

Mass = 80 g
Length of side = 2 cm

What is the density of the cube?

A.) 10 g/cm^3
B.) 20 g/cm^3
C.) 160 g/cm^3
D.) 640 g/cm^3

Answer 1

The answer is

`13.33 gcm^(-3)`

Step-by-step explanation

• Volume of the cube = ?

• The mass of the cube = 80 g

• The density of the cube = ?

The all the sides of the cube has same length.

If the length of one side of cube is 2 cm, the length of the width and height will also be 2 cm.

So,

`Volume of cube = a^3`

as a = 2 cm

`Volume = 8 cm^3`

`Density = Mass/Volume`

`Density = 80 g / 8 cm^3`

`Density = 10 gcm^(-3)`

The density of the cube will be

`10 gcm^(-3)`

The option is (A)