document.write( "Question 414591: A cyclist completed 5 laps of a circular track in one hour. If his average speed was 20 miles per hour, what is the diameter of
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Algebra.Com's Answer #290833 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "A cyclist completed 5 laps of a circular track in one hour OR 1 lap in 1/5hr
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document.write( " Distance = r*t = 20mph*1/5hr = 4mi around the track\r
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document.write( "Circumference = pi*d
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document.write( "   4mi = pi*d
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document.write( "  4mi/3.14 = diameter of the track. \n" );
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