Computer · Surveying

In a straight line, two lengths A and B are measured from a point P. The standard errors of measured lengths A and B are found to be 0.4 m and 0.3 m respectively. The standard error in the length (A − B) is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

10.1 m
20.5 m✓
30.35 m
40.7 m

Correct answer

0.5 m

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In a straight line, two lengths A and B are measured from a point P. The standard errors of measured lengths A and B are found to be 0.4 m and 0.3 m respectively. The standard error in the length (A − B) is:

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In a straight line, two lengths A and B are measured from a point P. The standard errors of measured lengths A and B are found to be 0.4 m and 0.3 m respectively. The standard error in the length (A − B) is:

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