document.write( "Question 496596: the area of a rectangle is 144 square meters. the length of the rectangle is three times it's width. find the length and width of the rectangle. \n" ); document.write( "

Algebra.Com's Answer #336501 by Earlsdon(6294) $\"\"$ $\"About$

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The area of a rectangle is given by:
\n" ); document.write( " $\"A+=+L%2AW\"$ Substitute $\"A+=+144%7D%7D%2C+%7B%7B%7BL+=+3W\"$
\n" ); document.write( " $\"144+=+%283W%29%28W%29\"$
\n" ); document.write( " $\"3W%5E2+=+144\"$ Divide by 3.
\n" ); document.write( " $\"W%5E2+=48\"$ Take the square root of both sides.
\n" ); document.write( " $\"W+=+4sqrt%283%29\"$ meters.
\n" ); document.write( " $\"L+=+3W\"$
\n" ); document.write( " $\"L+=+3%284sqrt%283%29%29\"$
\n" ); document.write( " $\"L+=+12sqrt%283%29\"$ meters. \n" ); document.write( "

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