document.write( "Question 1196989: A piece of a drain pipe, right cylindrical in shape, is 3 feet long. The wall of the pipe is ¾ inch thick; the inner radius of the pipe is 8 inches. Find the outside surface area of the pipe. \n" ); document.write( "
Algebra.Com's Answer #830047 by josgarithmetic(39618)\"\" \"About 
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The outside radius is \"8%263%2F4++inches\".\r
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\n" ); document.write( "\n" ); document.write( "Top and bottom of the outside are two of the same size. Those much together:
\n" ); document.write( "\"2%2Api%2A%288.75-8%29%5E2\"
\n" ); document.write( "\"2%2A%280.75%29%5E2%2Api\"
\n" ); document.write( "\"1.125pi\" square inches.\r
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\n" ); document.write( "\n" ); document.write( "Outer circumference:
\n" ); document.write( "\"2%2Api%2A8.75\"
\n" ); document.write( "\"17.5pi\"
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\n" ); document.write( "Outer wall surface area:
\n" ); document.write( "\"3%2A12%2A17.5pi\" \"sqr\"\"inches\"
\n" ); document.write( "\"highlight%28630pi%29\"\"sqr\"\"inches\"\r
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\n" ); document.write( "\n" ); document.write( "--\r
\n" ); document.write( "\n" ); document.write( "The length was given in feet. The factor 12 is for converting to inches.
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