Posted by Jake on Wednesday, January 18, 2012 at 5:29pm.
How do you find the distance? Please explain the steps ><
A ball in a pinball machine moves 13
of the way through a circular groove that has radius 3 m. How far does
the ball travel?
a. 3.14 m
b. 360 m
c. 6.28 m
d. 0.69 m

Math  Reiny, Wednesday, January 18, 2012 at 5:40pm
"moves 13 of the way" ???
check your typing.
whole rotation = 2π(3) = 6π
take "whatever you mean" of that circumference.
I think you meant 1/3 of the way, sooo
circum = 6π = 18.85
1/3 of that is 6.28 , one of the choices
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