# Question #2b390

Sep 14, 2017

See below.

#### Explanation:

Density is mass divided by volume. You have not given any units in your question.

It is normally given as:

$\frac{k g}{m} ^ 3$

but can be scaled up or down.

If we take the units to be grams and cubic centimetres.

Then:

$\frac{54 g}{40 c {m}^{3}}$

Dividing top and bottom by $40$ gives:

$\frac{1.35 g}{c {m}^{3}}$ this can also be written $1.35 g$ $c {m}^{-} 1$

So this would be read as 1.35 grams per cubic centimetre.