What is the density of lead if a piece of lead 1 cm by 20 cm by 30 cm has a mass of 6800 grams

The density of the lead is 11.3 g/cm³.

V = lwh = 30 cm × 20 cm × 1 cm = 600 cm³

Density = 6800 g/600 cm³ = 11.3 g/cm³

Note: The answer can have only one significant figure because that is all you gave for the height of the block. However, I calculated the density to three significant figures.

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