The height of red bar - Math Riddle


Can you determine the height of red bar with the help of information provided in the picture below?

 

 

Explanation :  

8m
From green bar, we can deduce that
the height of vertical bar = 2/3 of uninterrupted shadow length of the bar.
Therefore shadow of 6m of red bar indicates the height of 4m.
The remaining red bar casts a direct 1:1 vertical projection on the wall.
Therefore total length = 4m + 4m = 8m.

 

 


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