document.write( "Question 316348: what is the surface area of a piece of pipe that is open at both ends , has a diameter of 4 feet , and has a height of 12.5 feet ? and we must show our work \n" ); document.write( "
Algebra.Com's Answer #226279 by checkley77(12844)\"\" \"About 
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C=2PIR is the circumferance.
\n" ); document.write( "C=2*3.14*4/2
\n" ); document.write( "C=6.28*2=12.56 is the ciecumferance.
\n" ); document.write( "SA=C*L
\n" ); document.write( "SA=l12.56*12.5=157 ft^2 is the surface area.
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