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A parametric curve defined by rm x = cos left( frac...

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Calculus
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A parametric curve defined by \[{\rm{x}} = \cos \left( {\frac{{\pi {\rm{u}}}}{2}} \right),\,{\rm{y}} = \sin \left( {\frac{{\pi {\rm{u}}}}{2}} \right)\]     in the range 0 ≤ u ≤ 1 is rotated about the x-axis by 360°. Area of the surface generated is

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Correct Answer: Option C
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