document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=282089>Question 282089</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I find the radius of a this cylinder?<BR>\n" );
document.write( "The height (h) is twice the radius (r) The total area is 150&#960;\r<BR>\n" );
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document.write( "I set up the equation 2&#960;r(2r)+2&#960;r^2 = 150&#960;<BR>\n" );
document.write( "now what? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #204858 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=204858\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what is the formula for the area of a cylinder?<BR>\n" );
document.write( "Does total area include the top and bottom surface areas?<BR>\n" );
document.write( "height =2r radius =r area =150<BR>\n" );
document.write( "2 pi r^2 h is the lateral surface area<BR>\n" );
document.write( "2 pi r (r+h) all surface areas including top and bottom\r<BR>\n" );
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document.write( "2 pi r^2*2r =150 pi<BR>\n" );
document.write( "4 pi r^3=150<BR>\n" );
document.write( "r^3=150/4<BR>\n" );
document.write( "r^3=75<BR>\n" );
document.write( "r=3.35<BR>\n" );
document.write( "or<BR>\n" );
document.write( "2 pi r (r+h)=150 pi<BR>\n" );
document.write( "2 pi r *(3r)=150 pi<BR>\n" );
document.write( "6 pi r^3=150 pi<BR>\n" );
document.write( "r^3=150/6<BR>\n" );
document.write( "r^3=25<BR>\n" );
document.write( "r=2.92 </SPAN>\n" );
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