SOLUTION: Find the length of the arc s where r= 5m and central angle= 140 degrees. I converted 140 degrees to 7pi/9 rad and multiplied by 5. The answer I got was 35pi/9. However, in the

Question 929136: Find the length of the arc s where r= 5m and central angle= 140 degrees.
I converted 140 degrees to 7pi/9 rad and multiplied by 5. The answer I got was 35pi/9. However, in the back of my textbook, the answer is 55pi/9. Please help!
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Find the length of the arc s where r= 5m and central angle= 140 degrees.
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140 degs = 140pi/180 radians = 7pi/9
s = 5*7pi/9 = 35pi/9
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The book is wrong.
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