The tip of a 12-inch wiper blade wipes a path that is 30 inches long. What is the angle of rotation of the blade in radians to the nearest tenth?

0.4 radians

1.3 radians

2.5 radians

5.0 radians

Question

The tip of a 12-inch wiper blade wipes a path that is 30 inches long. What is the angle of rotation of the blade in radians to the nearest tenth?

0.4 radians

 1.3 radians

 2.5 radians

 5.0 radians

anonymous · Answer

@whpalmer4 ? @AccessDenied

accessdenied · Answer

Did you have any ideas?  Maybe start with a picture and label the information you have so far.

anonymous · Answer

No, this is the only question like this, don't know how to make a picture or anything for this problem..:/

anonymous · Answer

Dividing 30 by 12 gives 0.4, would that be the answer in radians?

accessdenied · Answer

Well, the wiper blade is basically a segment rotating about a point:
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