document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=397027>Question 397027</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Instead of drawing out all the rectangles, what is the rule to find the perimeter of a 100th rectangle. The perimeter of 1st rectangle is 6, second rectangle perimeter is 10. Third Triangle perimeter is 14. The 5th rectangle perimeter is 18. So, how can I find the perimeter by rule of a 100th rectangle? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #281470 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=281470\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sequence of perimeters is arithmetic.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5Bn%5D+=+a%5B1%5D+%2B+%28n-1%29d+=+6+%2B+%28n-1%294+=+6+%2B+4n+-+4+=+4n+%2B+2 ALIGN=MIDDLE  ALT=\"a%5Bn%5D+=+a%5B1%5D+%2B+%28n-1%29d+=+6+%2B+%28n-1%294+=+6+%2B+4n+-+4+=+4n+%2B+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Therefore the perimeter of the 100th rectangle is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5B100%5D+=+4%2A100+%2B+2+=+402 ALIGN=MIDDLE  ALT=\"a%5B100%5D+=+4%2A100+%2B+2+=+402\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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