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February 9th, 2012, 09:51 AM  #1 
Newbie Joined: Feb 2012 Posts: 1 Thanks: 0  Equal areas defined by parallel chords in a circle
Been trying to calculate multiple equal areas defined by parallel chords in a circle to mark off fuel levels on the end a horizontal cylindrical tank. Located applicable equations at http://en.wikipedia.org/wiki/Circular_segment#Formulas as follows: Area of each segment: A = ((R^2)/2)*(theta  sin(theta)). and Height of each segment: h = R(1cos(theta)/2) Assuming seven equal segment areas the central angle for topmost chord was calculated as 108.3 degrees, which cannot be correct. Repeatedly reviewed calculations to verify 108.3 degrees but found no arithmetic errors. Need some assistance. Thanks, ballensr@gmail.com end 

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areas, chords, circle, defined, equal, parallel 
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