document.write( "Question 1177947: A circular garden with a radius of 8' is divided into quadrants with walkways 2' wide. The garden also has a circular walkway 2' wide on the exterior. Bricks 2 1/4\" by 4\" by 8 1/4\" are used for the walkways. Bricks are placed flat. Determine number of bricks used.\r
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Algebra.Com's Answer #807143 by mananth(16946)\"\" \"About 
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\n" ); document.write( "Area of circular walkway = area of outer circle - area of inner circle\r
\n" ); document.write( "\n" ); document.write( "= 3.14 ( 10^2-8^2)\r
\n" ); document.write( "\n" ); document.write( "= 3.14 * 36\r
\n" ); document.write( "\n" ); document.write( "=113.04 ft^2\r
\n" ); document.write( "\n" ); document.write( "Now we have to add the area of walkway in between the quadrants\r
\n" ); document.write( "\n" ); document.write( "(6*2)* 4 = 48
\n" ); document.write( "area of central square =4ft^2\r
\n" ); document.write( "\n" ); document.write( "Total bricked area = 52+113.04 = 165ft^2\r
\n" ); document.write( "\n" ); document.write( "Area of brick = 0.69 * 0.33 = =0.23 ft^2\r
\n" ); document.write( "\n" ); document.write( "Number of bricks = 165/0.23 = 718 bricks\r
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