document.write( "Question 1078227: a small bird is sitting on top of 3' mailbox. It flies in a direct line up to the top of the tree, barely clearing a 5' fence that is 4' from the mailbox and 12' from the tree. How tall is the tree? \n" ); document.write( "
Algebra.Com's Answer #692726 by stanbon(75887)\"\" \"About 
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a small bird is sitting on top of 3' mailbox. It flies in a direct line up to the top of the tree, barely clearing a 5' fence that is 4' from the mailbox and 12' from the tree. How tall is the tree?
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\n" ); document.write( "Sketch the figure.
\n" ); document.write( "You have a right triangle with a proportional right
\n" ); document.write( "triangle at the acute-angle end of the larger triangle.
\n" ); document.write( "---
\n" ); document.write( "The triangles are proportional.
\n" ); document.write( "Equation:
\n" ); document.write( "Smaller triangle DATA::
\n" ); document.write( "height = 5'-3' = 2'
\n" ); document.write( "base = 4'
\n" ); document.write( "----
\n" ); document.write( "Larger triangle DATA:
\n" ); document.write( "base = 12'
\n" ); document.write( "height = h
\n" ); document.write( "-------
\n" ); document.write( "Equation to find \"h\"::
\n" ); document.write( "h/12 = 2/4
\n" ); document.write( "height of the tree = 6'
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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