The ratio of the flexural strength of two beams of square cross-section, the first beam being placed with its top and bottom

sides horizontally and the second beam being placed with one diagonal horizontally, is

- 1
  
  $\sqrt{3}$
- 2
  
  $1 / \sqrt{3}$
- 3
  
  $1 / \sqrt{2}$
- 4
  
  $\sqrt{2}$

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