document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=987650>Question 987650</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi! **P=pi (3.14)\r<BR>\n" );
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document.write( "A=2Pr^2 + 2Prh \r<BR>\n" );
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document.write( "Solve for r>0.\r<BR>\n" );
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document.write( "Thank you soooo much in advance. This was in a Calc BC summer packet. Due Tuesday! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #608381 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=608381\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah ALIGN=MIDDLE  ALT=\"A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A-A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A ALIGN=MIDDLE  ALT=\"A-A+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A ALIGN=MIDDLE  ALT=\"0+=+2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A+=+0 ALIGN=MIDDLE  ALT=\"2%2Api%2Ar%5E2+%2B+2%2Api%2Ar%2Ah-A+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2Api%2Ar%5E2+%2B+2%2Api%2Ah%2Ar-A+=+0 ALIGN=MIDDLE  ALT=\"2%2Api%2Ar%5E2+%2B+2%2Api%2Ah%2Ar-A+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The last equation is in the form <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2%2Bbx%2Bc=0 ALIGN=MIDDLE  ALT=\"ax%5E2%2Bbx%2Bc=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a+=+2pi ALIGN=MIDDLE  ALT=\"a+=+2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+2pi%2Ah ALIGN=MIDDLE  ALT=\"b+=+2pi%2Ah\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c+=+-A ALIGN=MIDDLE  ALT=\"c+=+-A\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Use the quadratic formula to solve for r\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29 ALIGN=MIDDLE  ALT=\"r+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%28-2pi%2Ah%2B-sqrt%28%282pi%2Ah%29%5E2-4%2A2pi%2A%28-A%29%29%29%2F%282%282pi%29%29 ALIGN=MIDDLE  ALT=\"r+=+%28-2pi%2Ah%2B-sqrt%28%282pi%2Ah%29%5E2-4%2A2pi%2A%28-A%29%29%29%2F%282%282pi%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%28-2pi%2Ah%2B-sqrt%284pi%5E2%2Ah%5E2%2B8Api%29%29%2F%284pi%29 ALIGN=MIDDLE  ALT=\"r+=+%28-2pi%2Ah%2B-sqrt%284pi%5E2%2Ah%5E2%2B8Api%29%29%2F%284pi%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+%3E+0 ALIGN=MIDDLE  ALT=\"r+%3E+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >, this means we only focus on the \"plus\" portion of the \"plus/minus\". So we end up with\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r+=+%28-2pi%2Ah%2Bsqrt%284pi%5E2%2Ah%5E2%2B8Api%29%29%2F%284pi%29 ALIGN=MIDDLE  ALT=\"r+=+%28-2pi%2Ah%2Bsqrt%284pi%5E2%2Ah%5E2%2B8Api%29%29%2F%284pi%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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