document.write( "Question 150902: which one of the following geometric forms is a curved surface.
\n" ); document.write( "A. side of a cone
\n" ); document.write( "B. side of a pyramid
\n" ); document.write( "C. Base of a cylinder
\n" ); document.write( "D. Base of a Prism
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Algebra.Com's Answer #110839 by mangopeeler07(462)\"\" \"About 
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A. side of a cone (because the cone itself has one base and no \"faces\", therefore no flat surfaces besides the base) \n" ); document.write( "
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