document.write( "Question 1197026: How many feet of piping can be made from 5 cubic feet of iron if the outer and inner diameters of the pipe are 8 and 6 inches, respectively? \n" ); document.write( "

Algebra.Com's Answer #830102 by ikleyn(52914) $\"\"$ $\"About$

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\n" ); document.write( "How many feet of piping can be made from 5 cubic feet of iron
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\n" ); document.write( "\n" ); document.write( " The solution by @josgarithmetic is INCORRECT, as usual.\r
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\n" ); document.write( "\n" ); document.write( " I came to bring a correct solution.\r
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document.write( "Outer diameter is 8 inches =  ft;  inner diameter is 6 inches =  ft.\r\n" );
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document.write( "Outer radius is   ft;  inner radius is   ft.\r\n" );
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document.write( "The cross-section area is  A =  -  =  =  =  square feet.\r\n" );
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document.write( "For the pipe length L we have this equation\r\n" );
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document.write( "    A*L = 5 cubic feet,  or   = 5.\r\n" );
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document.write( "From this equation\r\n" );
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document.write( "    L =  =  = 32.74 ft  (rounded).   \r\n" );
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document.write( "ANSWER.  The pipe length is about 32.74 ft.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "Formula in the post by @josgarithmetic is INCORRECT - - - even do not try to use it.\r
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\n" ); document.write( "\n" ); document.write( "For your safety, you better ignore his post.\r
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\n" ); document.write( "\n" ); document.write( "He re-wrote everything from me after seeing my post.\r
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