Antwort 4.2:7
Aus Online Mathematik Brückenkurs 1
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			|  (Translated into English) | K  (Svar 4.2:7 moved to Answer 4.2:7: Robot: moved page) | 
Version vom 14:54, 8. Sep. 2008
| The width of the river is \displaystyle \ \displaystyle\frac{10}{\sqrt{3}-1} m \displaystyle \approx 13\textrm{.}7 m. | 
 
		  