Question

In the diagram below, what is the approximate length of the minor arc DE?

. 5.2 cm
B. 3.1 cm
J cm
C. 6.3 cm
• D. 7.9 cm

Answer 1

arc DE = 36/360 × (2 × π × 10)

⟹ 1/10 × 20π

⟹ 2π

⟹ 2 × 3.14

⟹ 6.28 ≈ 6.3 cm (third option)