Arc length formula The length of an arc depends on the radius of a circle and the central angle θ. We know that for the angle equal to 360 degrees (2π), the arc length is equal to circumference. Hence, as the proportion

How to Calculate Arc Length. There are a few key things you need to know in order to calculate arc length. First, you need to know the radius of the circle. Second, you need to know the

An arc length is just a fraction of the circumference of the entire circle. So we need to find the fraction of the circle made by the central angle we know, then find the circumference of the total circle made by the radius we know. Then we just

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