document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=694548>Question 694548</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A right triangle has a perimeter of 36 units if the hypotenuse is 15 units, how long are the other 2 sides?\r<BR>\n" );
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document.write( "can you please explain me this? I dont understand.Thanks in advance. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #428160 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=428160\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A right triangle has a perimeter of 36 units if the hypotenuse is 15 units, how long are the other 2 sides? <BR>\n" );
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document.write( "Perimeter = a + b + c<BR>\n" );
document.write( "36 = a + b + 15<BR>\n" );
document.write( "a + b = 21<BR>\n" );
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document.write( "a = 21-b<BR>\n" );
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document.write( "Use Pythagoras:<BR>\n" );
document.write( "a^2 + b^2 = c^2<BR>\n" );
document.write( "(21-b)^2 + b^2 = 15^2<BR>\n" );
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document.write( "441 - 42b + 2b^2 = 225<BR>\n" );
document.write( "2b^2 - 42b + 216 = 0<BR>\n" );
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document.write( "b^2 -21b + 108 = 0<BR>\n" );
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document.write( "b = [21 +- sqrt(441-4*108)]/2<BR>\n" );
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document.write( "b = [21 +- sqrt(9)]/2<BR>\n" );
document.write( "b = [21+- 3]/2<BR>\n" );
document.write( "b = 12 or b = 9<BR>\n" );
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document.write( "Using a = 21-b<BR>\n" );
document.write( "If b = 12, a = 9<BR>\n" );
document.write( "If b = 9, a = 12<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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