document.write( "Question 221440: Perimeter of pool is 30ft. Length is twice as long as width. What is lenght? \n" ); document.write( "

Algebra.Com's Answer #166078 by Earlsdon(6294) $\"\"$ $\"About$

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Start with the perimeter formula:
\n" ); document.write( " $\"P+=+2%28L%2BW%29\"$ Substitute P = 30 and L = 2W.
\n" ); document.write( " $\"30+=+2%282W%2BW%29%5D%5D%5D+Simplify.%0D%0A%7B%7B%7B30+=+2%283W%29\"$
\n" ); document.write( " $\"30+=+6W\"$ Divide both sides by 6.
\n" ); document.write( " $\"5+=+W\"$
\n" ); document.write( "The length is 2W, so...
\n" ); document.write( " $\"L+=+10\"$ ft. \n" ); document.write( "

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