Answer:
The distance Neptune travels in a single orbit is [tex]60.26\pi AU[/tex].
Step-by-step explanation:
The distance that Neptune travels in a single orbit is the circumference of it's orbit.
The circumference [tex]c[/tex] of any circle of radius [tex]r[/tex] is
[tex]c = 2\pi r[/tex].
Therefore, the circumference of Neptune's orbit, which has a radius of 30.12 AU, is
[tex]c = 2\pi (30.13AU )[/tex]
[tex]\boxed{c = 60.26\pi\: AU }[/tex]
Or, in Kilometers this is
[tex]c = 9.0*10^9 \pi \: km.[/tex] [tex](1 AU = 1.5*10^8km)[/tex]
