Question

This question is from trignometry of class 9.​

Answer 1

4.2π cm ≈ 13.19 cm

Explanation:

The length s of an arc of a circle with radius r and central angle θ (in radians) is ...

s = rθ

Here, we have ...

s = (5.6 cm)(3π/4) = 4.2π cm ≈ 13.19 cm