Question

how do you find the circumference of a circle

Answer 1

C=2πr this is the formula

Answer 2

Use the formula \(C=2\pi r\)

Answer 3

or, to not bother with the "2" you can multiply it by the diameter:
\[C=d \pi\]
where "d" represents the diameter.

Answer 4

\[r = \frac{D}{2}\]

Answer 5

if you look up what is the circumfrence of a circle you can see a calculatore that will help you

Answer 6

\(\tau\) , not \(\pi\)! :P

Answer 7

\( C=2\pi r = \pi 2r = \pi \cdot d \)

Answer 8

quick and simple proof there, by perl.