document.write( "Question 163791: A circular pool is 34 feet in diameter and has a flag stone walk around it that is 3 feet wide. Find the area of the walk. Express the answer in terms of pie. \n" ); document.write( "
Algebra.Com's Answer #120653 by nerdybill(7384)\"\" \"About 
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A circular pool is 34 feet in diameter and has a flag stone walk around it that is 3 feet wide. Find the area of the walk. Express the answer in terms of pie.
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\n" ); document.write( "Draw a picture of the situation, this will help you \"see\" the problem. Imagine a donut, the \"hole\" is the pool and the donut is the walkway.
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\n" ); document.write( "\"area of circle formed by outer edge of walkway\" - \"area of pool\" = \"area of walkway\"
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\n" ); document.write( "\"area of circle formed by outer edge of walkway\":
\n" ); document.write( "radius = (34/2)+3 =17+3 = 20 feet
\n" ); document.write( "area = (pi)r^2
\n" ); document.write( "area = (pi)20^2
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\n" ); document.write( "\"area of pool\":
\n" ); document.write( "area = (pi)r^2
\n" ); document.write( "area = (pi)17^2
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\n" ); document.write( "\"area of circle formed by outer edge of walkway\" - \"area of pool\" = \"area of walkway\"
\n" ); document.write( "(pi)20^2 - (pi)17^2 = \"area of walkway\"
\n" ); document.write( "400(pi) - 289(pi) = \"area of walkway\"
\n" ); document.write( "111(pi) square feet = \"area of walkway\"
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