the formula to find the length of minor arc πr0/180
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A central angle which is subtended by a minor arc has a measure less than 180°. A major arc is an arc larger than a semicircle. A central angle which is subtended by a major arc has a measure larger than 180°. The arc length formula is used to find the length of an arc of a circle; ℓ=rθ ℓ = r θ , where θ is in radian.
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