ST6.4 Merry Go Round

A child, riding on a large merry-go-round, travels a distance of 3000 m in a circle of diameter 40 m. The total angle, in radians, through which she revolves is:
Incorrect
Incorrect
Correct
Incorrect
Incorrect

[There is ONE correct answer above. Choose the one you think is correct and press the "Check Your Answer" button below to see if you are right.]