document.write( "Question 169634: A circular pool is 46 feet in diameter and has a flag stone walk around it that is 4 feet wide. Find the area of the walk. Express the answer in terms of $\"pi\"$ . \n" ); document.write( "

Algebra.Com's Answer #125014 by Edwin McCravy(20056) $\"\"$ $\"About$

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Edwin's solution with drawings:
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\n" ); document.write( "A circular pool is 46 feet in diameter and has a flag stone walk around it that is 4 feet wide. Find the area of the walk. Express the answer in terms of $\"pi\"$ .
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document.write( "Here is the pool only, which is 46 feet across.\r\n" );
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document.write( "So it has a radius of half that, or 23 feet:\r\n" );
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document.write( "The area of the pool is given by the formula\r\n" );
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document.write( "It has a walk around it which is 4 feet wide.\r\n" );
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document.write( "If we take out the inner circle, like this:\r\n" );
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document.write( "we see that the outer circle, which includes both the\r\n" );
document.write( "pool and the walk, has a radius of \r\n" );
document.write( " or  feet.\r\n" );
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document.write( "The area of the outer circle which includes\r\n" );
document.write( "the pool and the walk is given by the formula:\r\n" );
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document.write( "Going back to the original picture:\r\n" );
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document.write( "AREA OF WALK = AREA OF OUTER CIRCLE - AREA OF INNER CIRCLE =\r\n" );
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document.write( " square feet.\r\n" );
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document.write( "Edwin

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