document.write( "Question 276441: A 20-ft ladder is leaning against a building. If the bottom of the ladder is 12 ft from the base of the building, how high does the ladder reach? \n" ); document.write( "
Algebra.Com's Answer #201453 by mananth(16946)\"\" \"About 
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A 20-ft ladder is leaning against a building. If the bottom of the ladder is 12 ft from the base of the building, how high does the ladder reach?\r
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\n" ); document.write( "\n" ); document.write( "Ladder length = 20 ft.\r
\n" ); document.write( "\n" ); document.write( "distance from base = 12 feet.\r
\n" ); document.write( "\n" ); document.write( "Using the pythagoras theorem\r
\n" ); document.write( "\n" ); document.write( "20^-12^2= height^2\r
\n" ); document.write( "\n" ); document.write( "400-144=256\r
\n" ); document.write( "\n" ); document.write( "= 16^2\r
\n" ); document.write( "\n" ); document.write( "So height = 16 feet.
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