Minimum Radius of Space Habitat to Maintain <1/100g Variation

[NateTheGreat]

Homework Statement

If the variation in g between one’s head and feet is to be less than 1/100 g, then, compared to one’s height, what should be the minimum radius of the space habitat?

*I honestly am not sure on how to go about answering this question.

 

[Hootenanny]

Which equation(s) would be useful here?