
Geometry Geometry Math Forum 
 LinkBack  Thread Tools  Display Modes 
November 18th, 2016, 07:56 AM  #1 
Newbie Joined: Nov 2016 From: New Orleans Posts: 1 Thanks: 0  Finding Radius of an arc given sections of diameter
Hello I have colleagues sending me data 46 times a day and I'm trying to determine if there is a simpler method than the one I've been using (drawing in autocad and dimensioning the drawing) or mathematical formula possibly. It's been a long long time since I was in a math class, figured I'd ask the pros. I receive measurements as pictured with left, center and right leg dimensions along with the width of the section. I've been drawing this in CAD and joining the legs with an arc, but other users are not versed in doing this and I don't think I'll be able to train them since I'm not very knowledgeable beyond this myself. Thanks for any help, let me know if further information is necessary. 
November 18th, 2016, 01:22 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 16,194 Thanks: 1147 
There are no labels on the diagrams and the diagrams are not numbered, so it's difficult to refer to them or the details within them. It's not clear how the diagrams relate to each other. If a circle of radius r has a minor segment of height h and width 2d, r² = d² + (r  h)² (by Pythagoras), so r = (d² + h²)/(2h). 

Tags 
arc, diameter, finding, radius, sections 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
help finding the radius  mmerlina  Algebra  3  November 17th, 2012 04:20 PM 
Finding the equation of a sphere from a diameter  Canadianmath  Algebra  2  September 13th, 2012 09:31 PM 
Finding Diameter of a Sphere (Density and Mass Provided)  polskon  Algebra  1  January 31st, 2012 01:36 PM 
finding the diameter...  im_with_stupid  Algebra  10  January 27th, 2011 06:05 PM 
Finding radius how?  peaceofmind  Algebra  4  November 4th, 2010 02:09 AM 