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OpenStudy (justinthomas0216):
Shannon's scooter has a piece of tape stuck to the tire. If the tire has a diameter of 18 inches, how far does the piece of tape travel in 72° of rotation?
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OpenStudy (justinthomas0216):
2π 9π 2 pi over 5 18 pi over 5
OpenStudy (justinthomas0216):
how did you get that?
OpenStudy (mathmale):
this is a problem in "arc length." The pertinent formula is s = r * theta, where r is the radius (not the diameter), theta is the central angle, and s is the arc length.
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