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June 2016 p13 q2
1334
The diagram shows part of the curve \(y = (x^3 + 1)^{\frac{1}{2}}\) and the point \(P(2, 3)\) lying on the curve. Find, showing all necessary working, the volume obtained when the shaded region is rotated through 360° about the x-axis.
Solution
To find the volume of the solid of revolution, we use the formula: