CirclesLesson 4 of 8
Arcs and sectors: slices of a circle
A 90° slice is a quarter of the circle, so it takes a quarter of the area and a quarter of the rim.
Locked
Unlock the rest of Junior Mathematics: arithmetic and geometry foundations.
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.