The volume of a copper cylinder is 5 dm3. What is his mass?

The volume of a copper cylinder is 5 dm³. What is his mass?

copper density (p) = 8,900 kg / m³

Solution

From the density formula:

p = m / V

p = density

m = mass

V = volume

We apply the formula for density:

p = m / V

We replace the numerical values for copper density (p) from the substance density table and copper volume (V) in the formula and we have:

8.900 kg / m³ = m / 5 dm³

We know that:

1 m³ = 1000 dm³ = 1,000,000 cm³

so we are converting dm³ into m³

5 dm³ = 0.005 m³ =>

8,900 kg / m³ = m / 0,005 m³

m = 8.900 kg / m³ * 0.005 m³

m = 44.5 kg

So the mass of copper cylinder (m) is 44.5 kg

Physics