Tunnel boring

How much material did they dig when cutting the 400m long tunnel? The content of the circular segment, which is the cross section of the tunnel is 62m2.


V =  24800 m3


l=400 m S=62 m2  V=S l=62 400=24800 m3l=400 \ \text{m} \ \\ S=62 \ \text{m}^2 \ \\ \ \\ V=S \cdot \ l=62 \cdot \ 400=24800 \ \text{m}^3

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