document.write( "Question 128413: A formula for the total surface area of a cylinder is given as: T = 2(pi)r(h+r), where h is the altitude and r is the radius of a base. Find the altitude in centimeters if the radius = 6cm and the total surface area = 168(pi)cm^2.
\n" ); document.write( "I need help in knowing how to set this up and solving it. thank you \n" ); document.write( "

Algebra.Com's Answer #93994 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"T+=+2%28pi%29%2Ar%2A%28h%2Br%29\"$
\n" ); document.write( " $\"r+=+6\"$ cm
\n" ); document.write( " $\"T+=+168%2A%28pi%29\"$ cm2
\n" ); document.write( " $\"168%2A%28pi%29+=+2%2A%28pi%29%2A6%2A%28h+%2B+6%29\"$
\n" ); document.write( "divide both sides by $\"12%2A%28pi%29\"$
\n" ); document.write( " $\"14+=+h+%2B+6\"$
\n" ); document.write( " $\"h+=+8\"$ cm answer
\n" ); document.write( "check answer:
\n" ); document.write( " $\"T+=+2%28pi%29%2Ar%2A%28h%2Br%29\"$
\n" ); document.write( " $\"T+=+2%28pi%29%2A6%2A%288%2B6%29\"$
\n" ); document.write( " $\"T+=+168%2A%28pi%29\"$
\n" ); document.write( "OK \n" ); document.write( "

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