document.write( "Question 102157: My biggest weakness in math is problems with cylinders so please help me out.\r
\n" ); document.write( "\n" ); document.write( "A cylindrical container including a top and bottom is made from no more than 108(pi) cm-squared of sheet metal. If the radius of the top is 3cm what is the maximum volume that the container can hold?
\n" ); document.write( "

Algebra.Com's Answer #74253 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
A cylindrical container including a top and bottom is made from no more than 108(pi) cm-squared of sheet metal. If the radius of the top is 3cm what is the maximum volume that the container can hold?
\n" ); document.write( "------------------------
\n" ); document.write( "If radius is 3 cm, area of the top is 9pi sq. cm.
\n" ); document.write( "Top + bottom = 18pi sq.cm.
\n" ); document.write( "=============================
\n" ); document.write( "Surface area of the side is 108pi cm^2 - 18pi cm^2 = 90pi cm^2
\n" ); document.write( "------------------------------
\n" ); document.write( "Formula for the surface of the area = 2pi*r*h
\n" ); document.write( "So, 2pi*r*h cm^2 = 90pi cm^2
\n" ); document.write( "rh = 45
\n" ); document.write( "But r=3
\n" ); document.write( "So, h = 45/3 = 15 cm
\n" ); document.write( "--------------------------
\n" ); document.write( "Volume = pir^2h
\n" ); document.write( "Volume = pi*3^2*15
\n" ); document.write( "Volume = 135pi cm^3
\n" ); document.write( "===================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );