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* Round Silo 

Okay. Here's the whole
picture. Most regular polygons follow the same procedure. And it
doesn't matter where the attachment point is, they all are done by
using partial circles and result in a final triangle, from which you
may have to subtract a portion of the barn. The base of the triangle
may take a little more figuring and there may be a different angle
from each side, but it is all doable. I believe this to be a universal
solution. If you have any suggestions or questions let me hear from
you. I have also included links to other published problems. 


Angle A = acos((b^{2}+c^{2}a^{2})/(2bc)) = 79.82^{o} Area K = b*c*sinA/2 or sqrt(s(sa)(sb)(sc)) blue quadrilateral angle of wedge So: total grazing area 5890.486 