how do i make the answer appear in pi form. i did 1/6 pi multiply by 1/12 pi and the answer was 0.1370778389 i want it in pi how do i fix the calculator

Aclothing designer is selecting models to walk the runway for her fashion show. the clothes she designed require each model’s height to be no more than y inches from 5 feet 10 inches, or 70 inches. which graph could be used to determine the possible variance levels that would result in an acceptable height, x?