document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1126399>Question 1126399</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Radiation&#8203; machines, used to treat&#8203; tumors, produce an intensity of radiation that varies inversely as the square of the distance from the machine. At 3&#8203; meters, the radiation intensity is 62.5 milliroentgens per hour. What is the intensity at a distance of 3.2 meters </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #742763 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=742763\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "If you want a formula that you can use to find the radiation intensity at any given distance from the machine, then you can find the constant of proportionality as shown by the other tutor.<br><BR>\n" );
document.write( "If you only need to answer the problem for this one new distance, you don't need to do that much work.<br><BR>\n" );
document.write( "Since the intensity varies inversely as the square of the distance from the machine, the intensity at 3.2 meters will be the intensity at 3 meters, multiplied by the square of the ratio of the two distances:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=62.5%2A%283%2F3.2%29%5E2 ALIGN=MIDDLE  ALT=\"62.5%2A%283%2F3.2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 54.932, to 3 decimal places. </SPAN>\n" );
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