Solve the Problem $y = \cos 2 x , 0 \leq x \leq \frac { \pi } { 4 }$

question 121

Multiple Choice

Solve the problem.
-Estimate the area of the surface generated by revolving the curve $y = \cos 2 x , 0 \leq x \leq \frac { \pi } { 4 }$ about the $x$ -axis. Use the Trapezoidal Rule with $n = 6$ .

• A) 4.652
• B) 5.108
• C) 7.091
• D) 4.606

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