document.write( "Question 1190708: The length of a wire fence a round a circular flowerbed is 100*22/7 meters. What is the area (in square cm) of a two - cm concrete wall surrounding this fence? \n" ); document.write( "

Algebra.Com's Answer #822420 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "As the problem is worded, I assume, based on the context, that the question is about the area \r\n" );
document.write( "of the horizontal cross-section of the concrete wall, and not about the area of the wall itself.\r\n" );
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document.write( "With enough precision, the area of the horizontal cross-section is the product of the circumference \r\n" );
document.write( "by the wall thickness, both expressed in centimeters\r\n" );
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document.write( "    the area of the horizontal cross-section =  =  = 62857 cm^2.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved. // Notice that 22/7 is a rational approximation for $\"pi\"$ .\r
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