Answer
Find out the how many ping pong balls would fit inside the Earth.
To prove
Let us assume that the number of ping pong would fit inside the Earth be x.
As given
A ping pong ball has a volume of approximately 3.4 cm³.
The Earth has a volume of approximately [tex]1.1\times 10^{27}[/tex] cm³ .
Than the equation becomes
[tex]3.4\times x = 1.1\times 10^{27}[/tex]
[tex]x = \frac{1.1\times 10^{27}}{3.4}[/tex]
[tex]x = 3.2\times 10^{26}[/tex] (approx)
Therefore in [tex]3.2\times 10^{26}[/tex] (approx) ping pong balls would fit inside the Earth.