When non-metric units were used in the United Kingdom,a unit of mass called the pound-mass (lbm) was employed,where 1 lbm = 0.4539 kg . (a) If there is an uncertainty of0.0001 kg in the pound-mass unit, what is its percentuncertainty? (b) Based on that percent uncertainty, whatmass in pound-mass has an uncertainty of 1 kg whenconverted to kilograms?

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Estimate of calculation