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Perimeter of a Circle - C/D Ratio
Last updated at May 29, 2026 by Teachoo
Perimeter of a Circle - C/D Ratio
Class 9
Chapter 6 Class 9 - Measuring Space: Perimeter and Area (Ganita Manjar
- Definition (and Quesitons)
- Perimeter of Different Shapes
-
Perimeter of a Circle - C/D Ratio
- Pi is Irrational
- Length of an Arc of a Circle
- Problems, Puzzles, and Paradoxes on Perimeter
- Exercise Set 6.1
- Area of Square & Rectangle
- Area of a Parallelogram
- Area of a Triangle
- Heron's Formula
- Circumcircle and Incircle of a Triangle
- Brahmagupta’s Formula for the Area of a Cyclic 4-gon
- Squaring a Rectangle
- Exercise Set 6.2
- Area of a circle
- Exercise Set 6.3
- End-of-Chapter Exercises
Transcript
Perimeter of a Circle - C/D Ratio In ancient days people realised that the ratio of the circumference to the diameter of the circle does not change if we change the size of the circle. We can call this ratio the C/D ratio of the circle Here, we can say that different circles have different values of Circumference and diameter, but 𝑪/𝑫 ratio is the same
