You can use the smart dimension tool to create the arc length dimension. The arc length is from end to end giving you the total length of the arc. To create an arc length dimension, start your smart dimension tool then select the arc, then both endpoints of the arc. During selection, SolidWorks will switch between three different dimension types.

Multiple Split Lines

I frequently use the SPLIT LINE feature to inscribe faces into sub-regions, for the precise placement of a load or boundary condition. If I want to apply several such boundary conditions, is there any way to inscribe multiple SPLITs without so many steps?

You can split a planar, cylindrical, or conical face with the command INSERT - FEATURES - WRAP. This command was intended for taking a planar sketch, and wrapping it upon a curved face. It just so happens, it works fine on planar faces, too. And, unlike the SPLIT LINE command, the “Inscribe” option of WRAP will correctly handle multiple closed contours. However, one limitation that WRAP has, that SPLIT LINE does not, is that the WRAP command only expects to act within the confines of a single face. So it is a cool trick that works for multiple contours, but they must lie within a single face, and the face must not have any compound curvature.

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