document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=186129>Question 186129</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The volume of a carpet that is rolled up can be estimated by the polynomial <BR>\n" );
document.write( "&#960;R^2h - &#960;r^2h\r<BR>\n" );
document.write( "\n" );
document.write( "a) factor the polynomial<BR>\n" );
document.write( "b) Use both the original and the factored forms to find the volume of a roll for which R =50cm, r =10cm, and h =4m. Use 3.14 for &#960;. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139572 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=139572\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> &#960;R^2h - &#960;r^2h=(3.14*50^2*4)-(3.14*10^2*4)=31400-1256=30144<BR>\n" );
document.write( ".<BR>\n" );
document.write( "&#960;R^2h - &#960;r^2h <BR>\n" );
document.write( "=pi*h(R^2-r^2)<BR>\n" );
document.write( "=3.14*4(2500-100)<BR>\n" );
document.write( "=12.56*2400<BR>\n" );
document.write( "=30144<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );