Calculating Rotation and Movement of a Rotating Fan at 0.17m Radius

[tjcreamer9]

A rotating fan completes 1200 revolutions every minute. Consider a point on the tip of a blade, at a radius of 0.17 m.
(a) Through what distance does the point move in one revolution?
m
(b) What is the speed of the point?
m/s
(c) What is the magnitude of its acceleration?
m/s2
(d) What is the period of the motion?
s

 

[tjcreamer9]

i have converted my units and still don't understand why i keep coming up wit .057 for part d. i need some guidence

 

[hage567]

i have converted my units and still don't understand why i keep coming up wit .057 for part d. i need some guidence

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