document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163506>Question 1163506</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Describe how tripling the radius affects the surface area of the right cylinder.\r<BR>\n" );
document.write( "\n" );
document.write( "r=2 yd<BR>\n" );
document.write( "h=7yd </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #787631 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=787631\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Tutor @ikleyn is right in saying that you can answer the problem by plugging the given numbers into the formula.  You shouldn't need our help to do that.<br><BR>\n" );
document.write( "On the other hand, the problem asks you to DESCRIBE how tripling the radius affects the surface area.  For that question, you should note that<br><BR>\n" );
document.write( "(a) tripling the radius multiplies the top and bottom surface areas by 9, because the formula for the area of the top and bottom surfaces, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+%28pi%29r%5E2 ALIGN=MIDDLE  ALT=\"A+=+%28pi%29r%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, involves the square of the radius.<br><BR>\n" );
document.write( "(b) tripling the radius multiplies the lateral surface area by 3, because the formula for the lateral surface area, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+2%28pi%29rh ALIGN=MIDDLE  ALT=\"A+=+2%28pi%29rh\"   DISABLED_style= \"max-width:90%; height:auto;\" >, only involves the radius to the first power.<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );