In levelling, error due to earth’s curvature is to be corrected usi – McqOptions

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1.	In levelling, error due to earth’s curvature is to be corrected using:
A.	Cc=0.0673D2
B.	Cc=0.0112D2
C.	Cc=0.0136D2
D.	Cc=0.0785D2
Answer» E.

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