Math

Hello, could someone please go over the steps for this question? Thank you!

1. Find the circumference. Leave your answer in terms of pi.
The middle line going through the circle is 8.4
(I'm so sorry I don't know the name of the line, brain fart).

A) 12.6 pi cm
B) 4.2 pi cm
C) 16.8 pi cm
D) 8.4 pi cm

So I know that Ms. Sue was going over this with me (thank you so much by the way)! But i'm still quite confused on how to do this problem.

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asked by Tim
  1. C = pi * diameter
    C = 8.4 pi

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