document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172033>Question 1172033</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rectangular pool has dimensions 100m x 200m. Surround the entire pool is a concrete deck (border) of<BR>\n" );
document.write( "uniform width. The area of the pool is twice the area of the concrete deck. Using an algebraic solution,<BR>\n" );
document.write( "find the width of the concrete deck. Round all answers to 2 decimal places. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #796949 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=796949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rectangular pool has dimensions 100m x 200m. Surround the entire pool is a concrete deck (border) of<BR>\n" );
document.write( "uniform width. The area of the pool is twice the area of the concrete deck. Using an algebraic solution,<BR>\n" );
document.write( "find the width of the concrete deck.<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Area of pool = 100*200 = 20000 sq meters ---- A big pool<BR>\n" );
document.write( "w = width<BR>\n" );
document.write( "Area of deck + pool = (100+2w)*(200+2w) = 30000<BR>\n" );
document.write( "(50+w)*(100+w) = 7500<BR>\n" );
document.write( "w^2 + 150w + 5000 = 7500<BR>\n" );
document.write( "w^2 + 150w - 2500 = 0<BR>\n" );
document.write( "Solve for w, ignore any negative solutions </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );