Additional Mathematics – Circular measure | e-Consult
Circular measure (1 questions)
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Answer 1
The arc length s of a sector is given by s = r\theta.
Substituting r = 5 cm and \theta = \frac{2\pi}{3}:
\[
s = 5 \times \frac{2\pi}{3} = \frac{10\pi}{3}\text{ cm}
\]
Therefore the arc length is \(\displaystyle \frac{10\pi}{3}\) cm.