2012 · Q52
A wheel makes 12 revolutions per minute. The angle in radian described by a spoke of the wheel in 1 second is:
Elementary MathematicsTrigonometry
- A5*pi/2
- B2*pi/5
- C3*pi/5
- D4*pi/5
Explanation
12 rev/min = 0.2 rev/s, giving 0.2*2*pi = 2*pi/5 radians.