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Posted by on Tuesday, March 1, 2011 at 8:43pm.

a circular track has a radius of 100ft. elena wants to run 2 miles. There are 5,280 ft in a mile.



Can you find the circumference of a circle if you know the radius? explain your answer

  • math - , Tuesday, March 1, 2011 at 9:35pm

    Circumference, C = 2 pi r
    or, C = pi d

    C = 2 pi r
    C = 2(3.24)(100)
    C = 628 feet for one lap

    5280 * 2 miles = 10,560 feet

    10560/628 = ? = laps in 2 mile

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