# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2015 | Oct-Nov | (P1-9709/13) | Q#4

Question The diagram shows a metal plate OABCDEF consisting of 3 sectors, each with centre O. The radius of sector COD is 2r and angle COD is radians. The radius of each of the sectors BOA and FOE is r, and AOED and CBOF are straight lines. i. Show that the area of the metal plate is . ii. Show that […]