The percentage uncertainty in the measured quantity is 1%. For A = pi r^2 the percentage uncertainty is:

  1. 0.5%
  2. 3%
  3. 2%
  4. 1%
Answer

C) 2%

A quantity raised to the power 2 has 2 times the percentage uncertainty: 2 1% = 2%. SLO P-11-A-06 · Application

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