document.write( "Question 801382: A rail road curve is to be laid out on a circle what radius should be used if the track is to change direction by 25 degrees in a distance of 120 m? \n" ); document.write( "

Algebra.Com's Answer #483748 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A rail road curve is to be laid out on a circle
\n" ); document.write( " what radius should be used if the track is to change direction by 25 degrees in a distance of 120 m?
\n" ); document.write( ":
\n" ); document.write( "25 degrees represent 120 m part of circumference
\n" ); document.write( " $\"25%2F360\"$ C = 120
\n" ); document.write( "25C = 360*120
\n" ); document.write( "C = $\"43200%2F25\"$
\n" ); document.write( "C = 1728 meters
\n" ); document.write( "Find the radius of circle with this circumference
\n" ); document.write( " $\"2%2Api%2Ar\"$ = 1728
\n" ); document.write( "r = $\"1728%2F%282%2Api%29\"$
\n" ); document.write( "r = 275 meters is the radius for a 25 degree arc of 120 meters \n" ); document.write( "

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