document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=262279>Question 262279</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the illuminance E at a point on a surface is given by the formula<BR>\n" );
document.write( "E = I/dē<BR>\n" );
document.write( "where E= illuminance in lux<BR>\n" );
document.write( "      I= luminous intensity of the light source in candelas<BR>\n" );
document.write( "      d= distance in metres<BR>\n" );
document.write( "rearrange this formula to make d the subject and find the value of d given that E= 25 lux and I= 100 candelas </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #193218 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=193218\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> d^2=I/E<BR>\n" );
document.write( "d^2=100/25<BR>\n" );
document.write( "d^2=4<BR>\n" );
document.write( "d=2 meters<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );