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The tip of an 11-inch wiper blade wipes a path that is 31 inches long. What is the angle of rotation of the blade in radians to the nearest tenth?
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The tip of an 11-inch wiper blade wipes a path that is 31 inches long. What is the angle of rotation of the blade in radians to the nearest tenth?

User Dan Parker
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2 Answers

4 votes

2.8 radians is the answer.

User Viilpe
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8.6k points
3 votes
length of arc = Cr where C = angle of rotation and r = radius

31 = C*11

C = 31/11 = 2.8 radians to nearest tenth
User Bert Regelink
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8.6k points
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