document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=966857>Question 966857</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The front wheel of a child's tricycle has a 10-inch radius and the rear wheels have a 6-inch radius. The pedals are attached to the front wheels by arms that are 7 inches long. How far does a pedal travel when the rear wheels make one revolution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #590941 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=590941\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the front wheel has a radius of 10 inches.<BR>\n" );
document.write( "the front pedal has a radius of 7 inches.<BR>\n" );
document.write( "the rear wheel has a radius of 6 inches.\r<BR>\n" );
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document.write( "one revolution of the rear wheel is exactly equal to the circumference of the rear wheel.\r<BR>\n" );
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document.write( "this is equal to 2 * pi * 6 which is equal to 12 * pi.\r<BR>\n" );
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document.write( "the circumference of the pedal is equal to 2 * pi * 7 which is equal to 14 * pi.\r<BR>\n" );
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document.write( "the pedal will actually be traveling the same distance as the rear wheel.\r<BR>\n" );
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document.write( "however, that same distance represents 12 * pi / 14 * pi = 6/7 of the circumference of the pedal.\r<BR>\n" );
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document.write( "the rear wheel will have traveled 360 degrees.\r<BR>\n" );
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document.write( "the pedal will have traveled 6/7 * 360 = 308.5714286 degrees.\r<BR>\n" );
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document.write( "the formula to calculate the arc length of 308.5714286 degrees is:\r<BR>\n" );
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document.write( "arc length = 308.5714286 / 360 * 2 * pi * 7 which is equal to 12 * pi.\r<BR>\n" );
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document.write( "that's the same distance of travel as the rear wheels did in one complete revolution.\r<BR>\n" );
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document.write( "i belive that answers your question.\r<BR>\n" );
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document.write( "let me know if you think otherwise.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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