document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=867917>Question 867917</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a paint roller in the shape of a cylinder with a radius of 4cm and a width of 21cm is rolled vertically on a wall.<BR>\n" );
document.write( "a) What is the wet path after ten compete rolls<BR>\n" );
document.write( "b) what area does the paint cover </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523257 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523257\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a paint roller in the shape of a cylinder with a radius of 4cm and a width of 21cm is rolled vertically on a wall.<BR>\n" );
document.write( "a) What is the wet path after ten compete rolls<BR>\n" );
document.write( "b) what area does the paint cover\r<BR>\n" );
document.write( "\n" );
document.write( "If it rolls once the length it rolls is one circumference=2pir\r<BR>\n" );
document.write( "\n" );
document.write( "=2*pi*4<BR>\n" );
document.write( "=8pi\r<BR>\n" );
document.write( "\n" );
document.write( "after 10 rolls it will roll a length of 80 pi=251.2 cm<BR>\n" );
document.write( "The wet path is 21 cm by 251.2 cm\r<BR>\n" );
document.write( "\n" );
document.write( "area = 21*251.2=5275.2 cm^2 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );