document.write( "Question 555520: A square lobby is to be tiled at a cost 160 per square meter. If the lobby were 2 m narrower and 2 m longer the cost of the tiling would be 35,360. Find the dimensions of the lobby. \n" ); document.write( "
Algebra.Com's Answer #361816 by edjones(8007)\"\" \"About 
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s=one side of the square lobby.
\n" ); document.write( "35360/160=221 m^2
\n" ); document.write( "(s+2)(s-2)=221
\n" ); document.write( "s^2-4=221
\n" ); document.write( "s^2=225
\n" ); document.write( "s=15 m
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