Geometry experts, only (please).
Greetings. I need a geometry expert, please.
I have an 8 inch, 390 degree, chimney pipe coming into my basement at a 45 degree angle. I need to cut out a tin heat shield that lays flat against the wall, around the pipe. Obviously, it would be "eliptical-ish" (my word), but I wonder what the equation for this would be?
Thanks very much
Dave Vanwerkhoven
Re: Geometry experts, only (please).
I don't understand question
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Re: Geometry experts, only (please).
Quote:
Originally Posted by
Vanwerkhoven 
Greetings. I need a geometry expert, please.
I have an 8 inch, 390 degree, chimney pipe coming into my basement at a 45 degree angle. I need to cut out a tin heat shield that lays flat against the wall, around the pipe. Obviously, it would be "eliptical-ish" (my word), but I wonder what the equation for this would be?
Thanks very much
Dave Vanwerkhoven
1. Draw a sketch (see attachment)
2. I assume that the 8' are refferring to the diameter? The minor axis has then the length b = 4. The major axis has consequently the length
}=4 \cdot \sqrt{2})
3. The equation of the ellipse is:
