document.write( "Question 634518: a ladder 4m leans against to wall. If the foot of ladder is 2m to the foot it the wall, how high the wall is ? \n" ); document.write( "
Algebra.Com's Answer #399724 by sachi(548)\"\" \"About 
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a ladder 4m leans against to wall. If the foot of ladder is 2m to the foot it the wall, how high the wall is ?\r
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\n" ); document.write( "the ladder forms a right triangle with leaned ladder as hypotenuse
\n" ); document.write( "so the height of the wall=sqrt(4^2-2^2)=2sqrt(3)m ans
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