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Trigonometry 16 Online
OpenStudy (anonymous):

A boy is twirling a model airplane on a string 5 ft long. If the twirls the plane at 0.5 revolution per minute, how far does the plane travel in 2 minutes?

OpenStudy (welshfella):

first work out the length of the half revolution, knowing that 1 revolution = 2 pi r feet where r = radius of the circle in which the airplane is moving

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