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January 26, 2015

January 26, 2015

Posted by **Nilan** on Saturday, March 31, 2012 at 7:14pm.

How do I work this?

Thank you.

- math - please help -
**Damon**, Saturday, March 31, 2012 at 7:21pmradius = 32 in = 2.67 ft

circumference = 2 pi r = 16.76 ft

how many feet in a minute?

6.5 mile/hr * 5280 ft/mile * 1 hr/60 min

=550 ft/min

so how many circumferences/min?

550/16.76 = 32.8 revs/min

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