Small challenge

[Vtile]

(06-08-2017 12:12 PM)SlideRule Wrote:  Pekis

Talk about one mistake leading to another - I shouldn't do these challenges after midnight. I was looking for the reason underlying the difference in the magnitude of my solution and made a hasty & incorrect assumption with respect to the calculation of the sagitta, very embarrassing senior moment!

I wonder, is there a third approach to the solution of the problem?

BEST!
SlideRule

At least it is nice to know that I'm not the only one writing gibberish at times while surfing at the midnight on MoHPC!

I'll throw in another small and easy challenge ( especially since I give a picture. ). You are making cones out of cardboard, what are the measures of the cut out piece when it is then bend to cone and the dimensions for the cone are as follows.

angle Alpha: 30 deg.
R: 30
Hx: 5
   

The given values are random.