document.write( "Question 77120: A rectangular field is three times as long as it is wide and it is enclosed by a fence x feet in length. What is the areas of the field, in terms of x? \n" ); document.write( "

Algebra.Com's Answer #55275 by josmiceli(19441) $\"\"$ $\"About$

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This says that the perimeter = x
\n" ); document.write( "the width measures 1 unit ans the length
\n" ); document.write( "measures 3 units, so the perimeter measures
\n" ); document.write( " $\"1+%2B+3+%2B+3+%2B+1+=+8\"$ units
\n" ); document.write( "Therefore the width is $\"x%2F8\"$
\n" ); document.write( "The length is $\"3%2A%28x%2F8%29\"$
\n" ); document.write( "The area is $\"%28x%2F8%29%2A3%2A%28x%2F8%29+=+3x%5E2+%2F+64\"$ answer
\n" ); document.write( "to check, just say x is any number, like 64
\n" ); document.write( "width is $\"64%2F8+=+8\"$
\n" ); document.write( "length is $\"+3%2A%2864%2F8%29+=+24\"$
\n" ); document.write( "area is $\"8%2A24+=+192\"$
\n" ); document.write( "Is that the same as $\"3x%5E2+%2F+64\"$ ?
\n" ); document.write( " $\"3x%5E2+%2F+64%7D+=+3%2A64%5E2+%2F+64\"$
\n" ); document.write( " $\"3%2A64+=+192\"$ OK \n" ); document.write( "

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