# The volume of the core made of cast iron is 3000 cm3. Find its mass.

September 21, 2021 | education

| Initial data: V (volume of cast iron core) = 3000 cm ^ 3.

Reference data: ρ (density of cast iron) = 7000 kg / m ^ 3.

SI system: V = 3000 cm ^ 3 = 3000 * 10 ^ -6 m ^ 3 = 3 * 10 ^ -3 m ^ 3.

The mass of a core made of cast iron can be calculated by the formula: m = V * ρ.

Let’s calculate: m = 3 * 10 ^ -3 * 7000 = 21 kg.

Answer: The mass of the cast iron core is 21 kg.

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