If a bicycle pedal is pushing a crank with a radius of 0.2 meters, how far will the pedal travel in one rotation if it is pushing the crank at an angle of 30 degrees to the crank?
Correct: A
Since the pedal is pushing the crank at an angle of 30 degrees, we can find the distance traveled by the pedal using the formula for the arc length of a circle: s = r * theta, where s is the arc length, r is the radius of the circle, and theta is the angle in radians. In this case, r = 0.2 meters and theta = 30 degrees = pi/6 radians. Therefore, s = 0.2 * pi/6 = 0.1 * pi meters.