If the difference between outer and inner radii of a circular ring is 14 cm, then the difference between outer and inner circumferences, is __________.

If the difference between outer and inner radii of a circular ring is

1.	If the difference between outer and inner radii of a circular ring is 14 cm, then the difference between outer and inner circumferences, is __________.
Answer» If the difference between outer and inner radii of a circular ring is 14 cm, then the difference between outer and inner circumferences, is __________.