Question 645699
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Note that 


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 16\ \times\ 25\ \times\ 2\ =\ 800]


Hence:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \sqrt{800}\ =\ \sqrt{16\,\cdot\,25\,\cdot\,2}\ =\ 4\,\cdot\,5\,\cdot\,\sqrt{2}\ =\ 20\sqrt{2}\ \approx\ 28.284271247461900976033774484194]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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