## anonymous 4 years ago A bicycle wheel with radius 26" rotates through an arc that measures 80°. What is the length of the arc of the tire that touched the ground?

1. anonymous

Find the circumference

2. anonymous

is this the same ?

3. anonymous

then multiply it by 80/360

4. anonymous

I told you how to do it now you should be able to do it

5. anonymous

104/9?

6. anonymous

or 11.5

7. anonymous

circumference is : $\Pi2r = \Pi d$

8. anonymous

$52 \Pi$

9. anonymous

Yes, i got that

10. anonymous

yeah but you forgot the pi

11. anonymous

And i did, 52pi*80/360

12. anonymous

Oh

13. anonymous

$52 \Pi \times \frac{ 80 }{ 360 }$

14. anonymous

see you know how to do it, just put the pi back in

15. anonymous

104/9 * pi

16. anonymous

that's it

17. anonymous

$104\pi/9$

18. anonymous

The pi times the whole set?

19. anonymous

20. anonymous

the 104 pi / 9

21. anonymous

Okay, thank you AGAIN.