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Exhibit A <br />Example: Irregular Rhombus <br />or Widening Rectangular <br />Length of each line: <br />A=20ft c=18ft <br />B=25ft d=21ft <br />Line (f) = A — c Line (e) = B — d <br />=20ft-18ft =25ft-21ft <br />=2ft =4ft <br />Area (cd) = c x d <br />=18ftx21ft <br />= 378 ftZ <br />Area (ce) _ (c x e) / 2 <br />=(18ftx4ft)/2 <br />=36ft- <br />Area (fd) _ (f x d) / 2 <br />=(2ftx21ft)/2=21ft' <br />Total Area = Area (cd) + Area (ce) + Area (Id) <br />= 378 ftZ+ 36 ft + 21 ftz <br />= 435 f1- <br />Non -Uniform Round <br />First measure 16 evenly spaced radii from the same center point (point A). This is called the <br />centerpoint. Next take the average ofall the radii (B+C+D+E+F+G+H+l+1+K+L+M+N <br />+ O + P + q) / 16. Use the average radii to calculate the area of a circle. (12.25 ft. in this <br />example). <br />F <br />Board used for measuring <br />M <br />