document.write( "Question 1021942: A square and a triangle have the same area. The base of the triangle is 3 ft. more than the side length of the square. The height of the triangle is 1 ft. less than the base of the triangle. What is the side length of the square? What are the base and height of the triangle? \n" ); document.write( "
Algebra.Com's Answer #637635 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
x, side length of the square
\n" ); document.write( "b, base of the triangle
\n" ); document.write( "h, height of the triangle\r
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\n" ); document.write( "\n" ); document.write( "\"system%28x%5E2=%281%2F2%29bh%2Cb=3%2Bx%2Ch=-1%2Bb%29\"\r
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\n" ); document.write( "\n" ); document.write( "You can solve this system for all three variables, but you are interested in b and h.\r
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\n" ); document.write( "\n" ); document.write( "Here is a possible start.
\n" ); document.write( "\"b=h%2B1\"
\n" ); document.write( "-
\n" ); document.write( "\"b=x-3\"
\n" ); document.write( "\"h%2B1=x-3\"
\n" ); document.write( "\"x-3=h%2B1\"
\n" ); document.write( "\"x=h%2B1%2B3\"
\n" ); document.write( "\"x=h%2B4\"
\n" ); document.write( "-
\n" ); document.write( "Substitute this into the area equation:
\n" ); document.write( "\"%28h%2B4%29%5E2=%281%2F2%29bh\"
\n" ); document.write( "But you ALSO have a relation between b and h which you can substitute...
\n" ); document.write( "\"highlight%28%28h%2B4%29%5E2=%281%2F2%29%28h%2B1%29%2Ah%29\"
\n" ); document.write( "which is an equation in only one unknown variable, h. Simplify and solve this for h.
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