Edexcel Mathematics June 2019 · Paper 2 · Question 3 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

June 2019 · Paper 2 · Question 3 · 3 marks

3. O5 cm BA 40° Figure 1 Figure 1 shows a sector AOB of a circle with centre O, radius 5 cm and angle AOB = 40° The attempt of a student to find the area of the sector is sho wn below. Area of sector = 1 2U࣠2ș = 1 2 u 52 u 40 = 500 cm2 (a) Explain the error made by this student. (1) (b) Write out a correct solution. (2)

Lesson: Proof by Deduction