document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187227>Question 187227</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0471662933/algebrahomeworkh>Mathematics For Elementary Teachers</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A right circular cylinder has a surface are of 112 pie. If the height of the cylinder is 10, find the diameter of the base?<BR>\n" );
document.write( "When trying to solve this problem I am aware of the surface area of a right circular cylinder S = 2A+Ch but I am not sure how to find the unknown diameter so that I could then find my circumference and area of the cicrle in the cylinder. If you could help me on this problem it would be greatly appreciated. Thanks<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #155743 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=155743\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A right circular cylinder has a surface are of 112 pie. If the height of the cylinder is 10, find the diameter of the base?<BR>\n" );
document.write( "When trying to solve this problem I am aware of the surface area of a right circular cylinder S = 2A+Ch but I am not sure how to find the unknown diameter so that I could then find my circumference and area of the cicrle in the cylinder.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Area = 2pi*r*h + 2pi*r^2<BR>\n" );
document.write( "112pi = 2pi*r*h + 2pi*r^2 <BR>\n" );
document.write( "56 = rh + r^2<BR>\n" );
document.write( "r^2 + 10h - 56 = 0<BR>\n" );
document.write( "(r+14)*(r-4) = 0<BR>\n" );
document.write( "r = 4<BR>\n" );
document.write( "dia = 8<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Notice it's pi, the Greek letter, not pie, the dessert. </SPAN>\n" );
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