A circle has a radius that is 3 centimeters long. If a central angle has a measure of 4 radians, what is the length of the arc that corresponds to the angle?
A. 4 centimeters
B. 7 centimeters
C. 12 centimeters
D. 3 centimeters

Question

A circle has a radius that is 3 centimeters long. If a central angle has a measure of 4 radians, what is the length of the arc that corresponds to the angle?
A.	4 centimeters
B.     7 centimeters
C.   12 centimeters
D.    3 centimeters

anonymous · Answer

the formula for the arc length is $$S = \theta * r $$
where S is the arc length 
and the r is the radius
the theta is the angle