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What is the correct answer?

4

The correction applied to the measured base of length L is

A. Tension = (P - Ps)L/AE

B. Sag = L3w²/24P² where w is the weight of tape/m

C. Slope = (h²/2L) + (h4/8L3) where h is height difference of end supports

D. All the above

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