engineering recuitment BHEL Engineer Trainee Mock Test 2025 Surveying Accuracy and Errors

A plot of land 60m x 20m is measured by a steel tape. If the standard error of length and width measurement is taken as ± 1 cm, then the standard error of the area of the plot would be

1
± 0.1414 m2
2
± 0.566 m2
3
± 0.632 m2
4
± 0.8484 m2
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