Using proportions, it is found that there are 22 stones in the circle.
A proportion is a fraction of a total amount.
In this problem, the sixth stone was directly opposite the seventeenth stone, hence over half the circle, there was 11 stones.
Then, we apply the proportion, and get that:
0.5n = 11
n = 22.
There are 22 stones in the circle.
More can be learned about proportions at https://brainly.com/question/24372153