A pilot training in a centrifuge with a rotor arm of length 9.4 meters is whirled around at 23.1 m/s. Calculate the acceleration in terms of g = 9.8 m/s². Answer with two digits of precision.

a. Involves the centripetal acceleration formula.
b. Utilizes the gravitational acceleration constant.
c. Applies principles of circular motion.
d. Considers the relationship between velocity and acceleration.