Math help on an arc measurement


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Oct 31st, 2015

Thank you for the opportunity to help you with your question!

The ratio of the arc length to the circumference is equal to the ratio of the arc measure to 360 degrees. Let y denote the arc measure. We have

4.189 / 2r*pi = y/ 360

189 / 6*pi = y/ 360 

  y= 360*4.189 / 6*3.14= 80

The answer is D.

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Oct 31st, 2015

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