Answer:
3.6 or 3 6/10
Explanation:
Note that between 3 and 4 there are 10 divisions. The dot is at the 6th division between 3 and 4, and thus is represented by 3.6 or 3 6/10.
3.6 and 3 6/10 both could also be written as 36/10 (which has not been reduced to lowest terms)