engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Surveying Accuracy and Errors

The radius of a circle is 21 m with a probable error ± 0.21. What will be the probable error of its circumference?

1
\( \pm \;1.32\)
2
\( \pm \;0.32\)
3
\( \pm \;2.32\)
4
\( \pm \;0.66\)

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