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Mathematics for IGCSE & O level - Rates (Section 2 - No. 2)

A rubber ball with volume 28.3 cm³ has density 0.7 g/cm³. What is its mass?
19.81 g
19.8 g
19.7 g
20 g

解释

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

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