From that picture 10.5" is only a piece of the radius..... just the portion of the radius of 109" of the circle.... the radius in fact would be much much larger.
On the drawing - are you cutting out a 10.5" wide piece (e.i. - 2 cuts -top and bottom)? or just one cut 10.5" from the base of the board?
@ W - 1st post he is looking for the radius, so you have a equation - that is no help. good job.
Last edited by sidekicknicholas; 10-02-2010 at 12:36 PM.