document.write( "Question 1002230: the external dimension of a closed cylindrical watertank made of concrete materials consist of its radius which is 3 meters and height is 8 meters.if the thinkness of the concrete walls is 1 decimeter,find the volume of the concrete walls to the nearest m \n" ); document.write( "

Algebra.Com's Answer #619195 by josgarithmetic(39620) $\"\"$ $\"About$

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Internal radius, being $\"1%2F10\"$ meter less than the external, is $\"3-1%2F10\"$ . The internal height, which points in two directions, maybe up and down, is $\"8-2%281%2F10%29\"$ . A little more simply, height internally is $\"8-1%2F5\"$ .\r
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\n" ); document.write( "\n" ); document.write( "Volume of the concrete walls, total volume minus the internal volume:
\n" ); document.write( " $\"pi%2A8%2A3%5E2-pi%2A%288-1%2F5%29%2A%283-1%2F10%29%5E2\"$
\n" ); document.write( "That is the basic beginning, just so you can see and understand.\r
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\n" ); document.write( "\n" ); document.write( " $\"pi%2A8%2A9-pi%2A%2839%2F5%29%2829%2F10%29%5E2\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"pi%2872-%2839%2F5%29%2829%2F10%29%5E2%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"highlight%286.402%2Api%29\"$ , cubic meters \n" ); document.write( "

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