document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=609856>Question 609856</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 5 foot long cylindrical pipe has an inner diameter of 6 feet and an outer diameter of 8 feet. If the total surface area (inside and out, including the ends) is kpi, what is the value of k? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #383981 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=383981\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 5 foot long cylindrical pipe has an inner diameter of 6 feet and an outer diameter of 8 feet. If the total surface area (inside and out, including the ends) is kpi, what is the value of k?<BR>\n" );
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document.write( "Area of inner surface=2&#960;*3*5 (circumference*length)=30&#960;<BR>\n" );
document.write( "Area of outer surface=2&#960;*4*5 (circumference*length)=40&#960;<BR>\n" );
document.write( "Surface area of one end=&#960;4^2-&#960;3^2=16&#960;-12&#960;=4&#960;<BR>\n" );
document.write( "Surface area for both ends=8&#960;<BR>\n" );
document.write( "Total surface area=40&#960;+30&#960;+8&#960;=78&#960; ft^2=k&#960; ft^2<BR>\n" );
document.write( "k=78  </SPAN>\n" );
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