document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121100>Question 1121100</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The driver-side wiper blade is 26 inches long and the passenger-side wiper blade is 16 inches long.\r<BR>\n" );
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document.write( "If the surface area of the windshield is 1250 square inches and both blades rotate at an angle of 100°, what percentage of the entire windshield is cleaned by the wiper blades?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #736845 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=736845\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The driver-side wiper blade is 26 inches long and the passenger-side wiper blade is 16 inches long.\r<BR>\n" );
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document.write( "If the surface area of the windshield is 1250 square inches and both blades rotate at an angle of 100°, what percentage of the entire windshield is cleaned by the wiper blades? \r<BR>\n" );
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document.write( "Do they overlap?  Most do.<BR>\n" );
document.write( "What's the distance between centers?<BR>\n" );
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document.write( "If they don't overlap:<BR>\n" );
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document.write( "Area of the circles pi*r^2 = pi*(26^2 + 16^2) = 932pi sq inches.<BR>\n" );
document.write( "The wiper's area = 932pi*100/360 = 2330pi/9 sq inches.<BR>\n" );
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document.write( "% = (100*2330*pi/9)/1250<BR>\n" );
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