Math
posted by Nataliestom House T .
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 ?

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