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January 26th, 2017, 12:33 PM  #1 
Newbie Joined: Jan 2017 From: Philadelphia, PA Posts: 2 Thanks: 0  Flattened Dimension of an Arc Segment?
Hello, I am a graphic designer and have a problem. I am designing digitally printed artwork that will be applied to a panel that is already radiused. I need to create an equal border all around, but can not figure this out until I know the what the larger, flat dimension of the radiused panel would be. Attached is the information that I know. Thank you in advance for your help. 
January 26th, 2017, 05:21 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,203 Thanks: 486 
Are you asking for the arc length? Get angle in radians $\displaystyle a=\frac{67\frac{2}{3}}{180}\pi $. Arc length = 20.375a.

January 27th, 2017, 04:09 AM  #3 
Newbie Joined: Jan 2017 From: Philadelphia, PA Posts: 2 Thanks: 0 
Thanks for your response mathman. Not the arc length, but the flattened length. I may not be using proper terminology, so I apologize. If you could visualize physically holding the arc segment and and then bending it flat, what would the flat length be? Thank you!

January 27th, 2017, 06:22 PM  #4 
Global Moderator Joined: May 2007 Posts: 6,203 Thanks: 486 
If there is no stretching or shrinking, the flattened length equals the arc length. If it doesn't, then you'll need to define flattened length better.

January 27th, 2017, 06:42 PM  #5 
Senior Member Joined: Sep 2015 From: CA Posts: 918 Thanks: 495 
given the numbers shown the panel needs to be 24.063 inches wide.
Last edited by romsek; January 27th, 2017 at 06:45 PM. 

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arc, dimension, flattened, segment 
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