# Arc Length of a Curve (2D and 3D)

**Type in parametric equations (in terms of t) of any curves . You can also change starting point (lower t) and the ending point (upper t) in the curve . The default values are t=0 to t=6.28. You can type in any numbers from -20 to 20. Two sketch 2D curves, type 0 for z. The integral represents the arc length formula of the curve from point A to B. You can verify the answers by hand calculation.**

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