document.write( "Question 939425: A circular fountain in a park includes a concrete wall that is 3 feet high and 2 feet thick. If the inner radius of the wall is x feet, write an algebraic expression in terms of x that represents the volume of the concrete used to construct the wall. Simplify the expression. \n" ); document.write( "
Algebra.Com's Answer #572493 by josgarithmetic(39617)\"\" \"About 
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The outer radius is x+2.\r
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\n" ); document.write( "\n" ); document.write( "Volume is difference of two cylinders.\r
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\n" ); document.write( "\n" ); document.write( "\"3%2Api%2A%28x%2B2%29%5E2-3%2Api%2Ax\"
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\n" ); document.write( "\"highlight%2818%2Api%2Ax%2B27%29\"
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