document.write( "Question 946474: a lead pipe 3 cm thick has an inner diameter of 4 cm. Find the number of cubic centimeters of lead in a piece of pipe 3 m long \n" ); document.write( "

Algebra.Com's Answer #577377 by Fombitz(32388) $\"\"$ $\"About$

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$\"ID=4\"$ $\"cm\"$
\n" ); document.write( " $\"R%5BI%5D=ID%2F2=2\"$ $\"cm\"$
\n" ); document.write( " $\"OD=4%2B3%2B3=10\"$
\n" ); document.write( " $\"R%5BO%5D=OD%2F2=5\"$ $\"cm\"$
\n" ); document.write( " $\"L=3%2A1000=3000\"$ $\"cm\"$
\n" ); document.write( "So then,
\n" ); document.write( " $\"V=pi%28R%5BO%5D%5E2-R%5BI%5D%5E2%29%2AL\"$
\n" ); document.write( " $\"V=pi%285%5E2-2%5E2%29%283000%29\"$ $\"cc\"$
\n" ); document.write( " $\"V=pi%2825-4%29%283000%29\"$ $\"cc\"$
\n" ); document.write( " $\"V=197920\"$ $\"cc\"$ \n" ); document.write( "

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