How do you find the length of an arc of a circle with a radius of 18cm if the arc subtends a central angle of 2(pi) / 3?
1 Answer
Jul 28, 2015
The arc has length
Explanation:
The radian measure of an angle,
Let
#theta = s/r#
Thus if we are given radius and the central angle in radians, we can find the arc length using:
In this case::
# = 6*2pi# cm
# = 12pi# cm