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Mathematics for IGCSE & O level - Rates (Section 1 - No. 4)

A rubber ball has a volume of 28.3 cm³ and a density of 0.7 g/cm³. What is its mass?
19.81 g
19.80 g
19.0 g
20.0 g

解释

Mass = Density x Volume. 0.7 g/cm³ * 28.3 cm³ = 19.81 g

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