Question: 1 . Consider a sample of beams with circular cross section. The diameters have mean 1 0 . 8 mm and standard deviation 0 .

1. Consider a sample of beams with circular cross section. The diameters have mean 10.8 mm and standard deviation 0.38 mm. What is the uncertainty of the cross-sectional area, expressed in mm2 to the nearest hundredth? (This question is asking for the actual uncertainty, not the relative uncertainty.)

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