Question

Question 10 of 10

If you know the circumference of a circle, which step(s) can you follow to find
its radius?
O
A. Divide by 2, then multiply by .
B. Divide by .
C. Divide by 2.
D. Divide by , then divide by 2.

Answer 1

Answer: Divide by
`\pi`, then divide it by 2

Explanation:

Circumference formula:
`\pi`*(r*2)

`\pi`*(r*2)/
`\pi`=r*2

(r*2)/2=r

So, divide by exactly pi (or 3.14), then divide by 2. DON'T divide by 2 first, then pi because you won't end up with the same answer.