In the density measurement of a cube, the mass and edge length are measured as 10.00 ± 0.10 k g and 0.10 ± 0.01 m , respectively. The error in the measurement of density is:

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Density ρ = m a s s v o l u m e ∆ ρ ρ = ∆ m m + ∆ V V = ∆ m m + 3 ∆ a a ∵ V = a 3 = 0.1 10 + 3 0.01 0.1 = 0.01 + 3 0.1 = 0.31

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