I need help with the question below:

A uniformly charged ball (a plasma ball) has a radius of 0.300 m. The electric field on its surface is outward and has a magnitude of 60.0 N/C. Two radial distances (two radii) have a field magnitude of 30 N/C. What is the larger value r2 (m)? O 0.523 O 1.22 O 0.560 O 0.382 O 0.667 O 0.424 O 0.367 O 0.283 O 0.781 O 0.341