Answer:
[tex]6.4\cdot 10^2 cm[/tex]
Explanation:
First of all, let's convert from nanometres to metres, keeping in mind that
[tex]1 nm = 10^{-9} m[/tex]
So we have:
[tex]6.4\cdot 10^9 nm \cdot 10^{-9} m/nm = 6.4 m[/tex]
Now we can convert from metres to centimetres, keeping in mind that
[tex]1 m = 10^2 cm[/tex]
So, we find:
[tex]6.4 m \cdot 10^2 cm/m = 6.4\cdot 10^2 cm[/tex]
