document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1002222>Question 1002222</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the external dimensions of a closed cylindrical water tank made of concrete materials consist of its radius which is 3 meters and height which is 8 meters if the thickness of the concrete wall is 1decimeter, what is the volume of the concrete walls to the nearest m3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #619269 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=619269\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the volume of a cylindrical prism is v = pi * r^2 * h\r<BR>\n" );
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document.write( "v is the volume<BR>\n" );
document.write( "pi is the constant of 3.14.....<BR>\n" );
document.write( "r is the radius<BR>\n" );
document.write( "h is the height.\r<BR>\n" );
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document.write( "you are given the external dimensions of the cylinder as:\r<BR>\n" );
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document.write( "r = 3 meters<BR>\n" );
document.write( "height = 8 meters.\r<BR>\n" );
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document.write( "you are also given that the thickness of the concrete walls is 1 decimeter.\r<BR>\n" );
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document.write( "you need to convert decimeters to meters or meters to decimeters.\r<BR>\n" );
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document.write( "from the conversion charts, you get 1 decimeter = 1/10 of a meter = .1 meters.\r<BR>\n" );
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document.write( "you also get 1 meter = 10 decimeters.\r<BR>\n" );
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document.write( "we'll convert everything to meters.\r<BR>\n" );
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document.write( "your outer dimensions are:\r<BR>\n" );
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document.write( "h = 8 meters<BR>\n" );
document.write( "r = 3 meters.<BR>\n" );
document.write( "thickness of the wall is 1 decimeter = .1 meters.\r<BR>\n" );
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document.write( "your inner dimensions are:<BR>\n" );
document.write( "h = 8 meters (no change here)<BR>\n" );
document.write( "r = 2.9 meters (subtract .1 meter from 3 meters to get 2.9 meters)\r<BR>\n" );
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document.write( "the volume of the external dimensions of the tank is equal to pi * 3^2 * 8 which is equal to 72 * pi cubic meters.\r<BR>\n" );
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document.write( "the volume of the internal dimensions of the tank is equal to pi * (2.9)^2 * 8 which is equal to 67.28 * pi cubic meters.\r<BR>\n" );
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document.write( "the volume of the concrete wall is there the difference which is 72 * pi minus 67.28 * pi = 4.72 * pi.\r<BR>\n" );
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document.write( "your solution is:\r<BR>\n" );
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document.write( "the volume of the concrete walls, rounded to the nearest cubic meters, is equal to 5. </SPAN>\n" );
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