How to get arc dimension to show radius?

All my arcs show degrees, but I want radius and I can’t see what I’m supposed to use to get that:

I even tried this, which seems a bit hacky, but I couldn’t get it to work either:

Just create a line between the center of the arc and some point on it. Should be enough.

I’m sorry, but I am very new at this.

Are you calculating the center point of the arc and then drawing a line dimension to that point?

So in other words, there isn’t a radius dimension in Grasshopper? I ask because the notation for the radius dimension is different. It’s a 45 degree angle line with an R in front of the value.

Could you please show those nodes with their full names, because I haven’t learned the icons yet.

Here you go. (7.1 KB)

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Thank you very much!

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