9231 P13 - Nov 2012 - Q6 - 7 marks
6515
The curve \(C\) has parametric equations
\(x=t^{2}, \quad y=\frac{1}{4} t^{4}-\ln t,\)
for \(1 \leqslant t \leqslant 2\). Find the area of the surface generated when \(C\) is rotated through \(2 \pi\) radians about the \(y\)-axis.
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