document.write( "Question 103282: Hi, Can you tell me how to find the surface area of a cylinder for this
\n" ); document.write( "a=4 cm, b=7 cm? Thanks.
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Algebra.Com's Answer #75104 by HyperBrain(694)\"\" \"About 
You can put this solution on YOUR website!
A good example is a can. Take note that it has TWO CIRCULAR bases. Something else happens when you 'unwrap' the can. It will make you a RECTANGLE with a length equal to the CIRCUMFERENCE of one base and a WIDTH equal to the HEIGHT of the cylinder.\r
\n" ); document.write( "\n" ); document.write( "Thus,
\n" ); document.write( "surface area =area of two bases + the area of the rectangle\r
\n" ); document.write( "\n" ); document.write( "area of the two bases=\"2%2Api%2Ar%5E2\"\r
\n" ); document.write( "\n" ); document.write( "area of the rectangle=\"%282%2Api%2Ar%29%2Ah\"\r
\n" ); document.write( "\n" ); document.write( " where r=radius
\n" ); document.write( " h=height\r
\n" ); document.write( "\n" ); document.write( "Thus,\r
\n" ); document.write( "\n" ); document.write( "surface area=\"2%2Api%2Ar%5E2\"+\"%282%2Api%2Ar%29%2Ah\"\r
\n" ); document.write( "\n" ); document.write( "Substituting r=4 and h=7,\r
\n" ); document.write( "\n" ); document.write( "S.A.=\"2%2Api%2A4%5E2\"+\"%282%2Api%2A4%29%2A7\"
\n" ); document.write( " =\"88%2Api\"
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