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Math

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The tip of the minute hand of Boston's Custom House Tower clock travels 6ft. 10 in. in 5 minutes.How long is the minute hand ?

  • Math -

    5 minutes is 1/12 of a rotation
    so
    (1/12)(2pi r) = 82 inches
    r = 82(12)/(2pi)
    = you do the button-pushing

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