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

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

8.4 pi = pi * 8.4

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

C = pi * d

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

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

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

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

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.

Sure! To find the circumference of a circle, you can use the formula:

C = πd

where C is the circumference and d is the diameter of the circle. In this case, you have the length of a line passing through the center of the circle, which is equivalent to the diameter.

1. The given middle line has a length of 8.4 units. Since it passes through the center of the circle, this is the diameter of the circle.

2. Now, you can substitute the value of the diameter into the formula for the circumference:

C = π * 8.4

3. Multiply π (pi) by 8.4 to calculate the circumference:

C ≈ 26.4π

4. The answer is in terms of pi. Therefore, the circumference is approximately 26.4π cm.

So, the correct answer is A) 12.6 pi cm, since it is the closest option to the calculated value of 26.4π cm.