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20 November, 18:06

A boy is twirling a model airplane on a string 4 feet long. if he twirls the plane at 0.25 revolutions per minute, how far does the plane travel in 4 minutes? round to the nearest tenth.

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  1. 20 November, 18:24
    0
    25.13 ft

    Explanation:

    r = 4 feet

    ω=0.25 revolution per minute

    =1 revolution in 4 minutes

    total number of revolution N = 1 (in 4 minutes)

    v=rω

    distance traveled = 2*N*π*r

    =2*1*π*4

    =8π

    = 25.13ft in 4mins
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