Sector — Grade 7 Math, what it means and where it is taught
Part of the edge; a "pizza slice" bounded by two radii.
Taught in Grade 7 Math.
Where it is taught
Practise this idea
2 questions in the course bank use Sector, in Circles.
Problem 1
Find the area of a 60° sector of a circle with radius 6, in terms of π (enter just the number in front of π).
Worked answer
6
60360 = 16
Whole circle: 36π
16 × 36π = 6π
Problem 2
Find the arc length of a 90° sector of a circle with radius 10. Use π ≈ 3.14.
Worked answer
15.7
Full circumference: 2 × 3.14 × 10 = 62.8
14 × 62.8 = 15.7