The circle-shaped part of the necklace above has a diameter

Last updated: 7/19/2022

The circle-shaped part of the necklace above has a diameter of 5 mm. The circumference of the circle-shaped part of each of the earrings is one-half the circumference of the necklace. What is the circumference of the circle-shaped part of one of the earrings? (Use 3.14 for .) A. 3.925 mm B. 7.85 mm C. 15.7 mm D. 31.4 mm