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TMUA 2022 Paper 1 Question 4

P1·Trigonometry, Algebra & Surds·5.5Official · 2022 · Q4
arc-lengthsector-areasimilar-figures
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These sectors of circles are similar.The arc length of the smaller sector is .The difference between the areas of the sectors is .Find the positive difference between the perimeters of the sectors.
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