If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are?

2N
N + 2
2N + 1
2N + 2

LohaHridoy

5 views

2025-01-04 04:42

1 Answers

AhmedNazir

Answer: Option 4

5 views Answered 2022-09-01 13:21

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