## anonymous one year ago PLEASE HELP I WILL MEDAL AND FAN Solve for r: C = 2pir. r = C over 2 pi r = 2 c all over pi r = C over pi r = pi times C all over 2

1. Michele_Laino

Hint: if we divide both sides by 2*pi, we get: $\Large \frac{C}{{2\pi }} = \frac{{2\pi r}}{{2\pi }}$ please simplify the right side

2. anonymous

2 pi r=c?

3. UsukiDoll

whenever there is a question like solve for r ... we need r to be by itself... so what do we need to do to make that happen?

4. anonymous

divide by 2

5. UsukiDoll

yes... we can do that... but there's more..

6. anonymous

2 pi

7. UsukiDoll

yes! so divide 2pi on both sides

8. Michele_Laino

hint: |dw:1434341418758:dw|

9. anonymous

r

10. Michele_Laino

so, what do you get?

11. anonymous

so A?

12. Michele_Laino

that's right!

13. UsukiDoll

yay!

14. anonymous

thanks! To whom do I medal?

15. UsukiDoll

let's all medal each other ^^

16. Michele_Laino

give the medal to @UsukiDoll she is a good helper!

17. anonymous

yes she is :)

18. anonymous

thanks!

19. Michele_Laino

:)