document.write( "Question 1086224: A plastic water pipe with a hollow center is 150 inches long, 1 inch thick and has an inner radius of x. Write an algebraic expressions in terms of x that represents the volume of the plastic pipe. \n" ); document.write( "

Algebra.Com's Answer #700411 by Fombitz(32388) $\"\"$ $\"About$

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Inner radius is $\"x\"$ .
\n" ); document.write( "Outer radius is $\"x%2B1\"$ .
\n" ); document.write( "So then,
\n" ); document.write( " $\"V=pi%28R%5Bo%5D%5E2-R%5BI%5D%5E2%29%2AL\"$
\n" ); document.write( " $\"V=pi%28%28x%2B1%29%5E2-x%5E2%29L\"$
\n" ); document.write( " $\"V=pi%28x%5E2%2B2x%2B1-x%5E2%29L\"$
\n" ); document.write( " $\"V=pi%282x%2B1%29L\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"V=pi%282x%2B1%29%28150%29\"$
\n" ); document.write( " $\"highlight%28V=150pi%282x%2B1%29%29\"$ $\"in%5E3\"$
\n" ); document.write( " \n" ); document.write( "

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