2025 IGCSE Additional Mathematics October/November 0606/21 Q9

2025 IGCSE Additional Mathematics October/November 0606/21 Q9

7 marks
  1. The diagram shows an isosceles triangle.
    Find the value of \(\theta\) in radians.[2]
  2. This diagram shows a shape made of two arcs.
    Each arc is part of a circle with radius 5 cm.
    The height of the shape is 8 cm.
    Use your answer to part (a) to find
    1. the perimeter of the shape[2]
    2. the area of the shape.[3]

Solution:

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Answer:(a) 1.85 rad (b)(i) 18.5 cm (ii) \(22.4\text{ cm}^2\)

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