Lesson 2 of 14
A slice is a share of the turn
Show on a big screenFifteen of forty voters picked cricket. How wide is that slice?
Step 1 of 4
- Circle for 40 voters.
- Cricket: 15 of the 40.
- One voter is worth 9°.
- Cricket's slice: 9° × 15 = 135°.
The cricket slice is 135° wide. One member's share is the angle for one voter. Here it is 360° ÷ 40 = 9°.
Rule: A slice's angle = one member's share × the group's count.
So 15 voters take 15 wedges: 15 × 9° = 135°.
Kabaddi had 10 voters: 9° × 10 = 90°. Football had 8: 9° × 8 = 72°. "No game" had 7: 9° × 7 = 63°. Add the four: 135 + 90 + 72 + 63 = 360. The four groups hold all 40 voters. So the slices fill the circle.
Read each question. Tap the angle for that group.
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Try the lab to finish this lesson.