1. What is the circumference of a circle with radius 2.1 cm? Use > 3.14. A. 12.69 cm B. 8.724 cm C. 13.188 cm D. 6.594 cm Hint 2. The Banderas family's dog, Scruffy, is put outside on a 9.4 ft long chain connected to the back of the house while the family is moving in new furniture. If scruffy stays at the end of the chain the entire time, pacing back and forth from wall to wall, how far does he have to walk? Use 3.14. A. 29.516 ft B. 14.758 ft C. 59.032 ft D. 23.543 ft Hint 3. Find the circumference of the circle shown. Round to the nearest tenth. A. 55.0 cm B. 3,846.5 cm C. 110.0 cm D. 961.6 cm Hint 4. Find the circumference of the circle shown. Round to the nearest tenth. A. 24.0 km B. 75.4 km C. 30.8 km D. 15.4 km Hint 5. Which is an accurate description of pi, ? A. the ratio between the area and radius of any circle B. the ratio between the area and diameter of any circle C. the ratio between the circumference and diameter of any circle D. the ratio between the circumference and radius of any circle Hint