Two ways to cut a circle.
Stretch the radius
radius
3.5
3.5
diameter
7.0
7.0
circumference
21.99
21.99
area
38.48
38.48
sector area ≈ 11.76
Two cuts
- Sector — the pizza slice between two radii and an arc.
- Segment — the region between a chord and the arc it cuts off.
Sector area