# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2015 | Oct-Nov | (P1-9709/11) | Q#11

Hits: 1639 Question The diagram shows part of the curve and a point P(6,5) lying on the curve. The line PQ intersects the x-axis at Q(8,0). i. Show that PQ is a normal to the curve. ii. Find, showing all necessary working, the exact volume of revolution obtained when the shaded region is rotated through 360o about the x-axis. [In part […]