document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=118075>Question 118075</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve.\r<BR>\n" );
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document.write( "A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 7 m from peak to eave and the attic space is 3 m high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #86184 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=86184\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 7 m from peak to eave and the attic space is 3 m high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.<BR>\n" );
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document.write( "Draw the picture: you have two right triangles, each with a hypotenuse of 7m<BR>\n" );
document.write( "and sharing a height of 3m.<BR>\n" );
document.write( "Let the base of one of the triangles be \"x\".<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "7^2 = x^2+3^2<BR>\n" );
document.write( "x^2 = 49-9<BR>\n" );
document.write( "x = sqrt40<BR>\n" );
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document.write( "That covers half the length of the rafter.<BR>\n" );
document.write( "The full length = 2sqrt40 = 12.65 m<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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