Our balance is maintained at least in part by the endolymph

Question

Solve the all parts of following question:

Question: Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid, causing dizziness. Suppose a dancer (or skater) is spinning at a very high rate of 2.80 revolutions/second about a vertical axis through the center of his head. Although the distance varies from person to person, the inner ear is approximately 7.0 cm from the axis of spin.

Part I: What is the radial acceleration (in m/s²) of the endolymph fluid?

Part II: What is the radial acceleration (in g's) of the endolymph fluid?

Thanks in advance that solve the above question.