document.write( "Question 116811This question is from textbook
\n" ); document.write( ": A cement pipe has an outside diameter of 11 1/4 in.and a wall thickness of 1 1/8 in. What is the inside diameter of the pipe? \n" ); document.write( "
Algebra.Com's Answer #84925 by josmiceli(19441)\"\" \"About 
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outside dia.) - (2X wall thickness) = inside dia.
\n" ); document.write( "\"d+=+11.25+-+2%2A1.125\"
\n" ); document.write( "\"d+=+11.25+=+2.25\"
\n" ); document.write( "\"d+=+9\" in. answer
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