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
- [tex]\theta[/tex] is the central angle in radians
Given
r = AB = 12cm
[tex]\theta[/tex] [tex]= \pi / 3[/tex]
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
