The diameter of the metal rod is 2.24 ±0.01 cm. Calculate the percentage error in this measurement.
Answers
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Given info : The diameter of the metal rod is 2.24 ± 0.01 cm.
To find : The percentage error in this measurement.
solution : percentage error = error in diameter /diameter length × 100
= 0.01/2.24 × 100
= 1/2.24
= 0.446 % ≈ 0.45 %
Therefore the percentage error in the diameter of metal rod is 0.45 %
[EXTRA Point : percentage error in base area of rod = 2 × percentage error in diameter
= 2 × 0.45 % = 0.9 % ]
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