Which statements are true regarding the area of circles and sectors? Check all that apply.
1. The area of a circle depends on the length of the radius.
2. The area of a sector depends on the ratio of the central angle to the entire circle.
3. The area of a sector depends on pi.
4. The area of the entire circle can be used to find the area of a suctor.
5. The area of a sector can be used to find the area of a circle.