Seudónimo Seudónimo 04-04-2017 Mathematics contestada The inner ring of a hula hoop has a radius of 18 inches. Which expression can be used to find its circumference, C, in inches? A C = 18 × π B C = (18)2 × π C C = 2 × 18 × π D C = 2 × (18)2 × π