Originally Posted by lee_stitches
Pythagorean Theorem? A squared + B squared = C squared is the formula for a right triangle. 8 squared + 8 squared = C squared. 64 + 64 = C squared. 128 = C squared. The square root of 128 = 11.3
Sorry, but that does not take the seam allowance into account. We just had that discussion on the German forum. It appears that Mrs. Pythagoras had it figured out, but her husband didn't listen. So the seam allowance is not part of the Pythagorean Theorem.