What is the ratio between the circumference and diameter of a circle of radius r
Answers
Answer:
Pi (Ratio of the Circumference of a Circle to Its Diameter) Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the circumference of a circle to its diameter and is called π (Pi).
Given : A circle with radius r
To find : ratio between the circumference and diameter of the circle
Solution:
Diameter of a circle = 2 * radius of circle
Circumference of a circle = 2 * π * radius of circle
radius of circle = r
Diameter of the circle = 2 r
Circumference of the circle = 2πr
ratio between the circumference and diameter of the circle
= Circumference of the circle / Diameter of the circle
= 2πr / 2 r
= π
Hence ratio between the circumference and diameter of a circle of radius r is π
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