document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1014567>Question 1014567</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the distance along an arc on the surface of the earth that subtends a central angle of 7 minutes (1 minute = 1/60 degree). The radius of the earth is 3960 miles. Round to the thousandths. (3 decimal places) \r<BR>\n" );
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document.write( "Answer in miles </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #630919 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=630919\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> arc length = central angle degrees of the arc / 360 * 2 * pi * r\r<BR>\n" );
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document.write( "your central angle is 7 minutes which is equal to 7/60 degrees because 1 minute = 1/60 degrees, therefore 7 minutes = 7/60 degrees.\r<BR>\n" );
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document.write( "arc length is therefore (7/60) / 360 * 2 * pi * r\r<BR>\n" );
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document.write( "since r = 3960 miles, this equation becomes:\r<BR>\n" );
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document.write( "arc length = (7/60) / 360 * 2 * pi * 3960\r<BR>\n" );
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document.write( "simplify this to get arc length = 8.063421144 miles.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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