The diagram shows a major sector, AOB, of a circle. The sector angle is 240° and the radius is 12 cm
Автор: Mathnetics by SRS
Загружено: 2026-01-31
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The question is referred from CIE IGCSE 0580 Mathematics Non-Calculator Extended Paper 22October November 2025, (0580/22/O/N/25), 0580 w25 qp 22 for educational purpose only.
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Question :
The diagram shows a major sector, AOB, of a circle.
The sector angle is 240° and the radius is 12 cm.
(a) Show that the length of the major arc AB is 16𝜋 cm. [1m]
(b) OA is joined to OB to form a cone.
Work out the volume of the cone.
Give your answer in the form (𝑎√𝑏)𝜋/ 3 where a is an integer and b is a prime number. [6m]
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We’ll break down:
✅ How to find the arc length of a sector
✅ How to find the radius of circular base of a cone
✅ How to find the perpendicular height of the cone
✅ How to find the volume of the cone.
This question tests your skills in finding the arc length of a major sector and volume of the cone— a must-know Mensuration topic for IGCSE Maths success.
📌 Perfect for students revising IGCSE 0580 Extended or Core paper and anyone aiming to boost exam confidence.
🔔 Don’t forget to like, share, and subscribe for more IGCSE Maths past paper solutions, tips, and tricks.
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