document.write( "Question 704634: Hello\r
\n" ); document.write( "\n" ); document.write( "If the area of a square is 2480 and one side is 18m. less than the other side. how long is the base and its height? \n" ); document.write( "

Algebra.Com's Answer #434195 by mananth(16946) $\"\"$ $\"About$

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let x be the length
\n" ); document.write( "x-18 is the width \r
\n" ); document.write( "\n" ); document.write( "area = length * width
\n" ); document.write( "2480= x(x-18)\r
\n" ); document.write( "\n" ); document.write( "2480 = x^2-18x
\n" ); document.write( "x^2-18x-2480=0\r
\n" ); document.write( "\n" ); document.write( "a= 1 b= -18 c= -2480
\n" ); document.write( "
\n" ); document.write( "b^2-4ac= 324 - -9920
\n" ); document.write( "b^2-4ac= 10244 $\"sqrt%28%0910244%09%29\"$ = 101.21
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"$ )/
\n" ); document.write( "x1=( 18 + 101.21 )/ 2
\n" ); document.write( "x1= 59.61
\n" ); document.write( "x2=( 18 - 101.21 )/ 2
\n" ); document.write( "x2= -41.61
\n" ); document.write( "Ignore negative value
\n" ); document.write( "x = 59.61 m\r
\n" ); document.write( "\n" ); document.write( "width / height = 59.61-18
\n" ); document.write( "height = 41.61 m
\n" ); document.write( " \n" ); document.write( "

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