Kathy has 5/6 of her water jug left after soccer practice. She drinks 3/4 of the water in her jug and now has 6 7/8 ounces of water. How much water can her jug hold?

the total distance around the pie is the circumference of the pie, assuming that the pie is a perfect circle then the formula for the circumference of a circle is:
c = piD
where pi is equal to 3.1416
D is the diameter of pie or circle

substitute the given values
C = (3.1416) ( 20 ft
c = 62.832 ft