Concept 8 of 10Foundation
Watch on YouTubeVideoPie charts — circular story-telling
A pie chart represents data as slices of a circle. Each slice's angle is proportional to the data value.
Since a full circle = 360°, for each category:
Slice angle = (category value / total) × 360°
All slice angles must sum to 360°.
Best used for PARTS OF A WHOLE (percentages, fractions of total). Not great for showing time trends (use a line graph instead).
Example
In a class of 36 kids, favourites are: Math 10, English 8, Science 12, Hindi 6.
Total 36.
Math slice = 10/36 × 360° = 100°.
Science slice = 12/36 × 360° = 120°.
Total 36.
Math slice = 10/36 × 360° = 100°.
Science slice = 12/36 × 360° = 120°.
💡 Tip:When you see a pie chart, check: do all labeled percentages add to 100? If not, one is missing.
▶Prefer a video? Open YouTube search for “pie chart class 6 maths”↗🎯 Try it!
5 questions to check what you just read.
0 / 5
- Q1.Total angle in a pie chart:
- Q2.A slice of 90° is what fraction of total?
- Q3.A class of 40. The 'swimming' slice = 120°. Swimmers:
- Q4.Two slices are 120° and 60°. The third (total must be 360°):
- Q5.Pie charts are best for: