document.write( "Question 712841: A pile of gravel is in the shape of a cone. If the pile is 8 feet high, and the diameter of the pile is 10 feet,how many cubic feet of gravel are in the pile?
\n" ); document.write( "(Hint:If the diameter is 10,what is the radius?)My answer is 279.3 cu ft. but the book answer key is 209.3 cu ft. am I wrong? yingyyl@earthlink.net
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Algebra.Com's Answer #438186 by jim_thompson5910(35256)\"\" \"About 
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\n" ); document.write( "V = (pi*r^2*h)/3\r
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\n" ); document.write( "\n" ); document.write( "V = (pi*5^2*8)/3\r
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\n" ); document.write( "\n" ); document.write( "V = 200pi/3\r
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\n" ); document.write( "\n" ); document.write( "V = 200*3.14/3\r
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\n" ); document.write( "\n" ); document.write( "V = 209.333333333333\r
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\n" ); document.write( "\n" ); document.write( "V = 209.3\r
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\n" ); document.write( "\n" ); document.write( "So there are approximately 209.3 cubic feet of gravel in the pile.
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