Question

A circle has a radius of 10 yards. What is the circumference of the circle? (Express your answer using π.) A. 5π yards B. 10π yards C. 20π yards D. 30π yards

Answer 1

C =
`\pi` 2r so the answer is
C =
`\pi` 2(10)
C =
`\pi` 20
C. 20
`\pi`

Answer 2

Circumference of the circle = 2πr
Here, r = 10 yards, so substitute it,

C = 2π(10) = 20π

In short, Your Answer would be Option C

Hope this helps!