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IB Mathematics: Applications and Interpretation HL · 12.10: Geometry & Trigonometry · 12.10.12

Arc length and sector area Problem set A Answers

Skills

  1. 14.5 cm

  2. 76.0 cm²

  3. r = 12.3 cm

  4. 93.5°

    1. (a) 5.60 cm
    2. (b) 22.4 cm²

In context

    1. (a) 22.7 cm
    2. (b) 13.9 cm²
    1. (a) 47.9 m²
    2. (b) 27.7 m

  3. 151 m²

    1. (a) 12.9 m
    2. (b) 3.23 m s⁻¹, which is 11.6 km/h
    3. (c) 0.661 s

Stretch

    1. (a) 88.9°
    2. (b) 27.5 m²
    1. (a) r = 6.25 cm
    2. (b) 23.4 cm²

jmaths.xyz · AI HL · 12.10.12 Arc length and sector area