Concept explainers
To calculate: The surface area when the parametric curve is revolved about x -axis.
Answer to Problem 57E
The required surface area is
Explanation of Solution
Given information:
The surface area of the solid:
The parametric equations:
Calculation:
The given surface area is
The parametric equations are
Differentiate the parametric equations with respect to t .
Substitute 0 for a ,
Simplify the above expression further.
Hence, the required surface area is
Chapter 11 Solutions
Calculus: Graphical, Numerical, Algebraic: Solutions Manual
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