document.write( "Question 765577: Find the outside surface area. Note that the cylinder does not have a top. (Assume a = 2 cm and b = 9 cm. Find the exact solution or round your answer to three decimal places.)
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Algebra.Com's Answer #466263 by MathLover1(20849)\"\" \"About 
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The surface area of a cylinder can be found by breaking it down into three parts:\r
\n" ); document.write( "\n" ); document.write( " The two circles that make up the ends of the cylinder.
\n" ); document.write( " The side of the cylinder, which when \"unrolled\" is a rectangle
\n" ); document.write( "The area of the rectangle is the width times height.\r
\n" ); document.write( "\n" ); document.write( "The area of a circle is \"r%5E2%2Api\", so the combined area of the two disks is twice that, or \"2r%5E2%2Api\". \r
\n" ); document.write( "\n" ); document.write( "The width is the height \"h\" of the cylinder, and the length is the distance around the end circles. \r
\n" ); document.write( "\n" ); document.write( "This is the circumference of the circle and is \"2%2Api%2Ar\". Thus the rectangle's area is \"2%2Api%2Ar+%2A+h\".\r
\n" ); document.write( "\n" ); document.write( "so, \"SA=2r%5E2%2Api%2B2%2Api%2Ar+%2A+h\"\r
\n" ); document.write( "\n" ); document.write( "since your cylinder does not have a top, the surface area will be\r
\n" ); document.write( "\n" ); document.write( " \"SA=r%5E2%2Api%2B2%2Api%2Ar+%2A+h\"\r
\n" ); document.write( "\n" ); document.write( "if your \"a=r=2cm\" and \"b=h+=9cm\", then we have\r
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\n" ); document.write( "\n" ); document.write( "\"SA=%282cm%29%5E2%2A3.142%2B2%2A3.142%2A2cm+%2A9cm\"\r
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\n" ); document.write( "\n" ); document.write( "\"SA=4cm%5E2%2A3.142%2B6.284%2A18cm%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"SA=12.568cm%5E2%2B113.112cm%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"SA=125.68cm%5E2\"\r
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