The ring system around saturn has a diameter of 170,000 miles. find the circumference of the ring system.

This question looks pretty familiar...

Let's use  where C = circumfrence and r = radius.

Because the diameter = 2 × the radius, we can use this instead:


Plug in 170,000 for d (our diameter).
[tex}C = \pi\times170,000[/tex]

If you want an exact answer, use 170,000[tex]\pi[tex].
If you want a decimal, just plug that into your calculator