Question

Someone help me I don’t understand the circumference C=2TTr

Answer 1

You are being asked to make π the subject in


`C=2πr \:`

So divide both sides of the equation by

`2r`

That is


`( C)/(2r) = (2πr)/(2r)`
The you have

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

or


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

I hope this is helpful?