document.write( "Question 1029603: The length of a rectangular swimming pool is twice its width. The pool is surrounded by a walk that is 2 feet wide. The area of the region consisting of the pool and the walk is 1056 square feet.
\n" ); document.write( "(a) Use the method of completing the square to determine the dimensions of the swimming pool.
\n" ); document.write( "The length of the pool is ____ feet, and the width of the pool is ____feet.
\n" ); document.write( "(b) If the material for the walk costs $8 per square foot, how much would the material cost for the entire walk?
\n" ); document.write( "The material would cost $____ .
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Algebra.Com's Answer #652364 by jorel555(1290)\"\" \"About 
You can put this solution on YOUR website!
First, l=2w. The dimensions of the area are w+4 and 2w+4. So:
\n" ); document.write( "a.(w+4)(2w+4)=1056
\n" ); document.write( "2w^2+12w+16=1056
\n" ); document.write( "w^2+6w-520=0
\n" ); document.write( "(w+26)(w-20)=0
\n" ); document.write( "w=20,-26
\n" ); document.write( "The width of our pool is 20 ft., and it's length is 40 ft..
\n" ); document.write( "b.The total area (1056) less the area of the pool (800) equals 256 sq. ft.. At $8 per square foot, that amounts to $2048 total dollars for the material!!!!!!!!!!\r
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