Question

Which of the following is not equivalent to the formula for the circumference of a circle, C = 2 πr ?

Answer 1

What are your answer choices?

Answer 2

hold on :)

Answer 3

ok

Answer 4

C over π = 2
C over 2π = r
C over 2r = π
2π over C = r

Answer 5

there (:

Answer 6

notice in choice A, if you multiply both sides by pi, you get

C/pi = 2

C = 2pi

which is missing the 'r' term, so there's no way it can be equivalent to C = 2pi*r

Answer 7

alright :) thanks so the answer is C=2pi ? :0

Answer 8

yes, thats correct

Answer 9

<3 thank you!! thank you!! thank you!!

Answer 10

you're welcome, glad to be of help