How to find length of a circle

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Arc Length

Formula 1: When the radius of a circle is known. Circumference of a circle = 2πr Formula 2: When the diameter of a circle is known.
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Circumference of a Circle Calculator

All of these values are related through the mathematical constant π, or pi, which is the ratio of a circle's circumference to its diameter, and is approximately 3.14159. π is an irrational number meaning that it cannot be expressed exactly
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Circle Length Calculator

Use the formula C = 2πr to find the circumference using the radius. In this formula, r represents the radius of the circle. Again, you can plug π into your calculator to get its numeral value, which is a closer approximation of

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3 Ways to Calculate the Circumference of a Circle

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How to Calculate Arc Length of a Circle, Segment and Sector

Solution: Radius, r = 8 cm Central angle, θ = 40° Arc length = 2 π r × (θ/360°) So, s = 2 × π × 8 × (40°/360°) = 5.582 cm Question 2: What is the arc length for a function f (x) = 6 between x = 4 and x = 6? Solution: Since the function is a