document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=233844>Question 233844</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The wheels of a car have radius 15 in, and are rotating at 800 rpm. Find the speed of the car in mi/h </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #172556 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=172556\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The wheels of a car have radius 15 in, and are rotating at 800 rpm. Find the speed of the car in mi/h<BR>\n" );
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document.write( "The car moves 1 circumference per revolution<BR>\n" );
document.write( "C = 2*15*pi = 30pi inches per rev<BR>\n" );
document.write( "@ 800 rpm, that's 24000pi inches/minute<BR>\n" );
document.write( "= 2000pi ft/minute<BR>\n" );
document.write( "= 120,000pi ft/hour<BR>\n" );
document.write( "= 120,000pi/5280 mph<BR>\n" );
document.write( "= 71.4 mph<BR>\n" );
document.write( " </SPAN>\n" );
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