# Aliah has a plastic toy that weighs 40g. What else does she need to know in order to calculate the density of this toy?

##### 3 Answers

Mar 24, 2018

#### Answer:

Well, she needs to know the volume....

#### Explanation:

By definition...

i.e.

Now if the toy floats on water then we know that

And if the toy sinks...

Mar 24, 2018

40g is the mass of the toy because it denotes the weight of the object.

The volume of the plastic toy is still needed to calculate the density.