document.write( "Question 458120: A wire 20m long is attached to the top of a telephone pole. The wire is just able to reach a point on the ground 12m from the base of the telephone pole. Find the height of telephone pole. \n" ); document.write( "
Algebra.Com's Answer #314231 by richwmiller(17219)\"\" \"About 
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20^2=12^2+a^2
\n" ); document.write( "400=144+a^
\n" ); document.write( "256=a^2
\n" ); document.write( "16=a
\n" ); document.write( "This is a 4 multiple of classic 3,4,5 right triangle
\n" ); document.write( "3*4=12
\n" ); document.write( "4*4=16
\n" ); document.write( "5*4=20
\n" ); document.write( "This hint will be handy on final exams when time is important.
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