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 ).

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

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  1. The line going through the middle of the circle is the diameter.

    C = pi * d

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    Ms. Sue
  2. How would I turn that into terms of pi though? Because I got 43.96 by using your formula.

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  3. Look at your answer choices. All of them use pi, not the numerical valuation of pi.

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    Ms. Sue
  4. Wait... would it be B then since it is the closest?

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  5. I'm confused, because the circumference is 8.4 pi. But how did we get that?

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  6. So I used the actual formula which is c=pi(d) and got 26.376 but that isn't an answer choice and isn't the correct answer.

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  7. 8.4 pi = pi * 8.4

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    Ms. Sue
  8. Thx!!!!!!!!!!! i'm still convinced your a teacher tho -_-...

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