Question

Solve the following formula for r: C=2πr
Choose ALL equivalent variations of your answer.
The first answer I got is r=c/2π. What are the other variations?

Answer 1

@Crixpack please help. Same question as before, except its C=2πr, solve for r. My first answer is r=c/2π.

Answer 2

That is correct, can you show me your options like you did last time

Answer 3

@Crixpack I checked off what I think is correct.

Answer 4

2 of those are incorrect.

you have \[r = \frac{ C }{ 2\pi }\]
and this is the same as
\[r = (\frac{ 1 }{ 2 })(\frac{ C }{ \pi }) = (\frac{ 1 }{ \pi })(\frac{ C }{ 2 })\]
etc.

What I mean is, look carefully and don't mix up which terms are in the numerator and which are in the denominator.

Answer 5

@Crixpack, Oh ok, I think I see what I messed up on. is it correct now?

Answer 6

Yes indeed :)

Answer 7

Thank you!