Question

Example 3 Find the radius of the circle in which a central angle of 60° intercepts an
22
arc of length 37.4 cm (use n == ).
7
22).​

Answer 1

Answer:

Radius = 39.1 cm

Step-by-step explanation:

$60 \: degrees = \frac{\pi}{3} rad$

$hence \: \alpha = \frac{l}{r} \\ r = \alpha \times l$

$r = \frac{\pi}{3} \times 37.4$

$r = 39.1$