Ayush Gusain on Instagram: "the ratio of the circumference to the diameterof every circle in the world always equals the same number, π (pi) , no matter how small or large the circle is. This is a mathematical constant whose value is approximately 3.14159. Key Points: Constant ratio: For any circle, the circumference (C) divided by its diameter (d) always gives π 𝐶/𝑑=𝜋 Value of π: In decimal, the value of π is approximately 3.14, but it is an irrational number that has no end. Similarity: All