Answer:
3.8379 meters
Step-by-step explanation:
A charged particle into an uniform magnetic field describes a circular movement with radius "r" acording to the equation r=(m*v)/(q*B), where m is the mass of the particle, v its velocity, q the charge, and B the perpendicularly uniform magnetic field. Replacing your value on this equation, the radius is 3.8379 m. I suggest to verify the value of the magnetic field, because 9.4 is a extremely high magentic field.