document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=858989>Question 858989</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A garden path around a circular garden is 5 feet wide all they way around and the distance around the outside of the garden path is 80 feet.  If a bag of gravel will cover an area of 10 square feet, how many bags of gravel will the gardener need to cover the path? Explain </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #517462 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=517462\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Diameter including walkway = 80 feet <BR>\n" );
document.write( "so radius = 40 feet\r<BR>\n" );
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document.write( "the width is 5 feet<BR>\n" );
document.write( "so the garden radius = 35 feet\r<BR>\n" );
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document.write( "Area of walkway = total area - garden area\r<BR>\n" );
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document.write( "Total area = pi*r^2<BR>\n" );
document.write( "=pi*40^2\r<BR>\n" );
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document.write( "garden area = pi*35^2\r<BR>\n" );
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document.write( "Difference = pi*40^2-pi^35^2\r<BR>\n" );
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document.write( "=pi(40^2-30^2)<BR>\n" );
document.write( "= 121 sq.ft\r<BR>\n" );
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document.write( "10 sq.ft ----------------1 bag<BR>\n" );
document.write( "121 sq.ft ---------------?\r<BR>\n" );
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document.write( "121/10\r<BR>\n" );
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document.write( "=12.1 bags\r<BR>\n" );
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document.write( "= 13 bags  of gravel<BR>\n" );
document.write( " </SPAN>\n" );
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