Geometry · Classes 9, 10, 11
Arc Length
Arc length for central angle θ in degrees.
FORMULA
\(s=\frac{\theta}{360}2\pi r\)
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Enter values to see a result and calculation steps.
Worked example
r=7, θ=180° ⇒ 7π
Understand this formula
Arc length for central angle θ in degrees.
Check measurement units, mathematical domains and rounding before applying any result in an examination.