document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137748>Question 1137748</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Would someone please help?\r<BR>\n" );
document.write( "\n" );
document.write( "The surface area, A, of a cylinder in terms of its radius, r, and height, h, is given by <BR>\n" );
document.write( "A = 2πr^2 + 2πrh.\r<BR>\n" );
document.write( "\n" );
document.write( " If the height of the cylinder is 4 feet, express the radius as a function of A. <BR>\n" );
document.write( "r(A) =\r<BR>\n" );
document.write( "\n" );
document.write( "Find the radius if the surface area is 350 square feet. (Round your answer to two 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 #755622 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755622\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "The surface area, A, of a cylinder in terms of its radius,<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+r ALIGN=MIDDLE  ALT=\"+r\"   DISABLED_style= \"max-width:90%; height:auto;\" >, and height, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h ALIGN=MIDDLE  ALT=\"h\"   DISABLED_style= \"max-width:90%; height:auto;\" >, is given by <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2pi%2Ar%5E2+%2B+2pi%2Ar%2Ah ALIGN=MIDDLE  ALT=\"A+=+2pi%2Ar%5E2+%2B+2pi%2Ar%2Ah\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "If the height of the cylinder is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=4 ALIGN=MIDDLE  ALT=\"h=4\"   DISABLED_style= \"max-width:90%; height:auto;\" >feet, express the radius as a function of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A ALIGN=MIDDLE  ALT=\"A\"   DISABLED_style= \"max-width:90%; height:auto;\" >. \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2A4 ALIGN=MIDDLE  ALT=\"A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2A4\"   DISABLED_style= \"max-width:90%; height:auto;\" > .....solve for <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r ALIGN=MIDDLE  ALT=\"r\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%2Api%2Ar%5E2+%2B+8%2Api%2Ar ALIGN=MIDDLE  ALT=\"A+=+2%2Api%2Ar%5E2+%2B+8%2Api%2Ar\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%2Api%28r%5E2+%2B+4r%29 ALIGN=MIDDLE  ALT=\"A+=+2%2Api%28r%5E2+%2B+4r%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%5E2+%2B+4r=A+%2F2pi ALIGN=MIDDLE  ALT=\"r%5E2+%2B+4r=A+%2F2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" > ...........complete the square on left side\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%5E2+%2B+4r%2Bb%5E2%29-b%5E2=A+%2F2pi ALIGN=MIDDLE  ALT=\"%28r%5E2+%2B+4r%2Bb%5E2%29-b%5E2=A+%2F2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" > ....<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=2 ALIGN=MIDDLE  ALT=\"b=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%5E2+%2B+4r%2B2%5E2%29-2%5E2=A+%2F2pi ALIGN=MIDDLE  ALT=\"%28r%5E2+%2B+4r%2B2%5E2%29-2%5E2=A+%2F2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%2B2%29%5E2-4=A+%2F2pi ALIGN=MIDDLE  ALT=\"%28r%2B2%29%5E2-4=A+%2F2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28r%2B2%29%5E2=A+%2F2pi%2B4 ALIGN=MIDDLE  ALT=\"%28r%2B2%29%5E2=A+%2F2pi%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%2B2=sqrt%28A+%2F2pi%2B4%29 ALIGN=MIDDLE  ALT=\"r%2B2=sqrt%28A+%2F2pi%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28A%29+=sqrt%28A+%2F2pi%2B4%29-2 ALIGN=MIDDLE  ALT=\"r%28A%29+=sqrt%28A+%2F2pi%2B4%29-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Find the radius if the surface area is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=350 ALIGN=MIDDLE  ALT=\"350\"   DISABLED_style= \"max-width:90%; height:auto;\" > square feet. (Round your answer to two decimal places.) \r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28A%29+=sqrt%28350+%2F2pi%2B4%29-2 ALIGN=MIDDLE  ALT=\"r%28A%29+=sqrt%28350+%2F2pi%2B4%29-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28A%29+=sqrt%2859.73248407643312%29-2 ALIGN=MIDDLE  ALT=\"r%28A%29+=sqrt%2859.73248407643312%29-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28A%29+=7.728679322913658-2 ALIGN=MIDDLE  ALT=\"r%28A%29+=7.728679322913658-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r%28A%29+=5.73 ALIGN=MIDDLE  ALT=\"r%28A%29+=5.73\"   DISABLED_style= \"max-width:90%; height:auto;\" >  feet\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );