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Would you like to add information to this article? Interested in writing or submitting an article? Have a question about this article? CAD Forum -- Specifying Arc Length Question
Forum Responses
From contributor A: I forgot a step. After you select T for Total, you will prompted to give a value. At that point you will type in the length you want the arc to be. From the original questioner: Thanks - that works. From contributor B: You can use some math to get angle: angle= (length*180)/PI*R now just draw arc with center, radius, angle PI=3.141593 From contributor C: 1. In ought-to-CAD draw a circle of the desired radius and list the circumference. 2. Divide the desired radius by the circumference. 3. Multiply the result from #2 by 360 to obtain the circle section for the required arc. 4. Draw two lines of the calculated angle from the center of the circle to the circle. 5. There’s your arc of the desired length. From contributor C: Correction: 2. Divide the desired length (not radius) by the circumference. From contributor D: It's simple - draw the circle first with the radius that you have, then select draw point and then "measure" command to the length that you have. The points are going to be spaced to that # in circle - and just break the rest of that and you have your arch. From contributor E: We are using '06 and do this on the pointer but on the command line don't you get the options - center, end? try; arc select a start point E for end - put in your fixed length acad will now ask for (Angle, Direction, Radius) type R enter and type your radius enter. You should see your arc. Have you reviewed the related Knowledge Base areas below?
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