Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 7)

The density of a bar of gold is 19.3 g/cm³, correct to the nearest 0.1 g/cm³. A bar of gold measures 8.6 cm by 4.1 cm by 2.4 cm, correct to the nearest mm. What is the smallest possible mass of the gold bar?

1699.8 g

1699 g

1698 g

1697 g

Explanation

To find minimum mass, you want the minimum density and the minimum volume. Lower bound Density = 19.25 g/cm³. Lower bound Volume = 8.55 x 4.05 x 2.35 = 81.34. 19.25 * 81.34 = 1566.8g

Mathematics for IGCSE & O level - Limits Of Accuracy (Section 3 - No. 7)

Explanation

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