The Central angle was calculated to be 3 radians using the formula.
it is the angle subtended by radii and corresponding arc.
as we know that
length of an arc= central angle* radius
so, central angle = arc length/radius
it is given that
length of the arc=18cm
the radius of the circle=6cm
central angle= 18/6 = 3 radian.
therefore, the central angle was calculated to be 3 radians using the formula.
to get more about circles refer to the link,
https://brainly.com/question/24375372
