Respuesta :

1 mm = 10^-3 m

so you can write 1mm as 10^-3 m (they are the same thing)

1 nm=10^-9 m

10^-3 m in nm = [tex]\frac{10^{-3}m × 1nm }{10^-9 m}= 10^{-6}nm[/tex]