Find the Area of the Surface Obtained by Revolving the Given

question 36

Multiple Choice

Find the area of the surface obtained by revolving the given curve about the $x$ -axis.
$$y = \frac { e ^ { x } + e ^ { - x } } { 2 } \text { on } [ 0 , \ln 3 ]$$

• A) \(\pi \ln 3\)
• B) \(\pi \left( \frac { 20 } { 9 } + \ln 3 \right)\)
• C) \(\frac { 20 } { 9 } \pi\)
• D) \(\frac { \pi } { 3 } \left( \frac { 20 } { 9 } + \ln 3 \right)\)

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