document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=343778>Question 343778</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If an equation is dimensionally correct, then must the equation be true? why or why not? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #245965 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=245965\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> No, a true equation must also be dimensionally correct but some dimensionally correct equations are not true.<BR>\n" );
document.write( "As an example,<BR>\n" );
document.write( "The area of a square is equal to the perimeter of the square multiplied by the length of the side of the square.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=%28s%2Bs%2Bs%2Bs%29%2As=4s%5E2 ALIGN=MIDDLE  ALT=\"A=%28s%2Bs%2Bs%2Bs%29%2As=4s%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Dimensionally, the units are correct (Area=Length^2)<BR>\n" );
document.write( "But the equation is not true.<BR>\n" );
document.write( "The area of a square is actually <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A=s%5E2 ALIGN=MIDDLE  ALT=\"A=s%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "True and dimensionally correct.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );