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| Question 973187:  What is the angle measure of an arc pi meters long with a radius of 4?
 Answer by Boreal(15235)
      (Show Source): 
You can put this solution on YOUR website! Radius of the circle is 4.  A semicircle has an arc length of 4 pi Therefore, if you divide the semicircle arc by 4, you have pi as an arc length, and that is 45 degrees OR pi/4 radians.  That will make the arc length pi meters,
 
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