Sign in to jmaths to print this page or save it as a PDF: jmaths-8ce638778fd6.herokuapp.com/maths/ai-hl/geometry-trigonometry/12-10-12/problems/b/

jmaths

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

Arc length and sector area Problem set B Answers

Skills

  1. 7.87 cm

  2. 82.0 cm²

  3. r = 12.0 m

  4. 98.5°

    1. (a) 8.40 cm
    2. (b) 25.2 cm²

In context

    1. (a) 37.5 cm
    2. (b) 40.3 cm²
    1. (a) 138 km²
    2. (b) 47.0 km

  3. 84.8 m²

    1. (a) 9.24 m
    2. (b) 3.08 m s⁻¹, which is 11.1 km/h
    3. (c) 0.449 s

Stretch

    1. (a) 83.6°
    2. (b) 33.5 m²
    1. (a) r = 6.43 cm
    2. (b) 16.5 cm²

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