document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=429840>Question 429840</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is a question from the Circles and Arcs subject of my Geometry book. I am clueless about what formula to use. Please help, the problem is: \"The wheel of one car has a diameter of 20 inches. The wheel of another car has a diameter of 24 inches. About how many more revolutions must the smaller wheel make than the larger wheel to travel 100 feet?\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #298527 by </B><A HREF=/tutors/aboutme.mpl?userid=shree840><B>shree840(260)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=shree840><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=shree840><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=298527\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2*pi*r is the circumeference or pi*d<BR>\n" );
document.write( "using pi as 3.14<BR>\n" );
document.write( "first car 3.14*20=62.8 or 62.8/12=5.23 ft\r<BR>\n" );
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document.write( "to cover 100 ft  needs 100/5.23 rev=19.12\r<BR>\n" );
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document.write( "2nd car pi*d= 3.14*24inches=3.14*24/12=6.28<BR>\n" );
document.write( "rev needed foer 100 ft= 100/6.28=15.92  diff 19.12-15.92=3.19 ANS </SPAN>\n" );
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