document.write( "Question 930610: A pipe of thickness 3/4cm has an internal diameter of 14cm. Find the volume of material of 3m of pipe in cm cubed. \n" ); document.write( "
Algebra.Com's Answer #565159 by Alan3354(69443)\"\" \"About 
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A pipe of thickness 3/4cm has an internal diameter of 14cm. Find the volume of material of 3m of pipe in cm cubed.
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\n" ); document.write( "OD = 15.5 cm --> r = 7.75 cm
\n" ); document.write( "Inside r = 7 cm
\n" ); document.write( "Cross-section area = pi*(7.75^2 - 7^2) = 11.0625pi sq cm
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\n" ); document.write( "Vol = area*length = 11.0625*3000*pi = 33187.5*pi cc
\n" ); document.write( "=~ 104261.6 cc
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