document.write( "Question 1087632: The local park measures 60 m by 50 m. Part of the park is torn up to install a sidewalk of uniform width about it, reducing the area of the park itself by 321 m2. How wide is the sidewalk? \n" ); document.write( "

Algebra.Com's Answer #701983 by ikleyn(52777) $\"\"$ $\"About$

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\n" ); document.write( "The setup is made (and should be made) in 3 lines:\r
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document.write( "60*50 - (60-2x)*(50-2x) = 321,\r\n" );
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document.write( "220x - 4x^2 = 321,\r\n" );
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document.write( "4x^2 - 220x + 321 = 0.\r\n" );
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