Hello there, and thank you for posting your question here on brainly.
You can solve by using a simple calculator because this wouldn't easily be done on paper.
√1/69 ≈ 0.12
Now you need to find out which of these fractions / square roots are correct.
0.12 ≠ 13
0.12 ≠ 84.5
0.12 = 1/84.5
0.12 ≠ 1/13
Your answer should be C. 1/84.5
Hope this helped!! ☺♥