Question

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?

2.88pi inches
5.78pi inches
11.56pi inches

Answer 1

length of arc = r*c
where r = radius and c is the angle of the arc in radians

Answer 2

so the first thing you nedd to do is convert 80 degrees to radians

Answer 3

so to start it would be 26*80?

Answer 4

26 being the radius- r and 80 being the angle - c

Answer 5

ohh convert to radians first

Answer 6

yes yu can do it that way if you like
- now you have to convert to radians

Answer 7

180 degrees = pi radians

Answer 8

so 80 would be 1.396 radians right?

Answer 9

yes but thay want the answer it terms of pi