document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=110618>Question 110618</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A wheel 4 ft. in diameter makes x revolutions. Find x, given that the distance traveled by a point on the circumference of the wheel is 23169 ft. Round your answer to the nearest whole number.\r<BR>\n" );
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document.write( "The answer is 1844 revolutions but I can't figure out how to get there. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #80598 by </B><A HREF=/tutors/aboutme.mpl?userid=bucky><B>bucky(2189)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bucky><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=80598\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The circumference of a circle (or wheel) is the distance around the outside. It is given<BR>\n" );
document.write( "by the formula:<BR>\n" );
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document.write( "C = pi*D<BR>\n" );
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document.write( "where D is the diameter of the wheel and pi is a special number that is never ending but<BR>\n" );
document.write( "is 3.14159265 ...... and for most purposes can be shortened to 3.1416<BR>\n" );
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document.write( "This means that for our equation we can use:<BR>\n" );
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document.write( "C = 3.1416*D<BR>\n" );
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document.write( "and we are told that the diameter of the wheel is 4 feet. That means that the distance<BR>\n" );
document.write( "around the outer edge of the wheel is:<BR>\n" );
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document.write( "C = 3.1416*4 feet<BR>\n" );
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document.write( "and if you do the multiplication you get:<BR>\n" );
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document.write( "C = 12.5664 feet. <BR>\n" );
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document.write( "So if you put a mark on the outer rim of the wheel, and you rotate the wheel once,<BR>\n" );
document.write( "that spot will travel a distance of 12.5664 feet.<BR>\n" );
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document.write( "The problem tells you that a spot on the wheel is known to have traveled 23169 ft and<BR>\n" );
document.write( "asks you to find the number of complete turns or revolutions that the wheel had to make to get<BR>\n" );
document.write( "the spot to move that far. Since each turn gives 12.5664 ft you can just divide 23169 by 12.5664<BR>\n" );
document.write( "to find the number of turns. <BR>\n" );
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document.write( "Calculator time:<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=23169%2F12.5664+=+1843.726 ALIGN=MIDDLE  ALT=\"23169%2F12.5664+=+1843.726\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "So if the wheel revolves 1843.726 times (rounded to 1844 times) the total distance <BR>\n" );
document.write( "traveled by a spot on the wheel will be about 23169 feet.<BR>\n" );
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document.write( "Hope this helps you to understand the problem.<BR>\n" );
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