Mathematics (Syllabus D) · Oct / Nov 2025 · Paper 22 · Question 23
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130° B C O A NOT TO SCALE The diagram shows a shaded area in a large circle, centre O. The radius of the large circle is 10 cm. OAB is a sector of a small circle, centre O. The radius of the small circle is 7 cm and the sector angle is 130°. C is on the circumference of the large circle and AC = BC. Calculate the percentage of the area of the large circle that is shaded. % [5]
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