The exact length of arc AB is 4πcm
The formula for calculating the length of an arc is expressed as:
where:
- r is the radius of the circle AB
- \(\theta\) is the central angle in radians
Given
r = AB = 12cm
\(\theta\) \(= \pi / 3\)
Substiute;
L = 12 * π/3
L = 4π
L = 12.56 cm
Hence the exact length of arc AB is 4πcm
Learn more on length of an arc here: https://brainly.com/question/2005046
