1. What is the formula for the circumference of a circle? | ![]() |
2. How do I find the area of a circle if I only know the diameter? | ![]() |
3. Can the radius of a circle be negative? | ![]() |
4. What is the relationship between the radius and diameter of a circle? | ![]() |
5. How can I find the area of a sector of a circle? | ![]() |