Set Up and Evaluate the Definite Integral for the Area $y = \frac { x } { 2 } , 1 \leq x \leq 9$

question 110

Multiple Choice

Set up and evaluate the definite integral for the area of the surface formed by revolving the graph of $y = \frac { x } { 2 } , 1 \leq x \leq 9$ about the $x$ -axis.

• A) \(40 \sqrt { 5 } \pi\)
• B) \(4 \sqrt { 5 } \pi\)
• C) \(20 \sqrt { 5 }\)
• D) \(4 \sqrt { 5 }\)
• E) \(20 \sqrt { 5 } \pi\)

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