Choose your shape
square rect circle ellipse
units  dimensional:  weight:  density:  ozs/in 3
circle
  Height Volume Weight
  in in3 ozs
^ 1.00078.54117.62
  0.87568.72102.92
  0.75058.9188.22
  0.62549.0973.51
Z 39.2758.81
  0.37529.4544.11
  0.25019.6429.41
  0.1259.8214.70
^    
Z step:  
  Area
      in 2 		^  Rx   ^
3.00 4.00 6.00 7.00
  7.00                         153.94
  6.00                   113.10     
Ry 5.00             78.54           
  4.00       50.27                 
  3.00 28.27                       
step:  
Shape
perimeter		 minimum fiber needed for:
1st layer 2nd layer 3rd layer
31.4 32.2 33.0 33.8