Question

The density of copper is 9.86g/cm[cubed] work out the mass of the solid in kg
width is 5cm
height is 3cm
depth is 10cm

Answer 1

Thus the mass of copper in solid form is m =  9860 kg / m^3

Step-by-step explanation:

Density of copper = 9.86 g / cm^3 = 9860 kg / m^3

= 9.86 x 1 / 1000 kg / cm^3 = 9.86 / 1000 Kg / cm^3

= 0.00986 kg / cm^3

Or

= 9.86 x 1 / 1000 kg (1 / 100 m)^3

= 9.86 x 1000000 / 1000 kg / cm^3

Mass "m" = 9860 kg / m^3

Thus the mass of copper in solid form is m =  9860 kg / m^3

Answer 2

Given: Density of copper is 9.86 g/cm, width is 5 cm , height is 3 cm , depth is 10 cm.

To find: Mass of the solid in kg.

Solution:

• To find the mass we have the formula:

                  density = mass per unit volume = mass/volume

• To find volume we have the formula : width x height x depth.

                  0.05 m x 0.03 m x 0.1 m = 0.00015 m³

• Now we have density 9.86g/cm, so changing the density from g/cm³ to kg/m³

                 9.86 g/m³ x 1000 = 9860 kg/ m³

• Now put these value of density in kg and volume in the formula, we get:

                mass = Density x volume

                          = 9860 kg/ m³ x 0.00015 m³

                          = 1.479 kg

Answer:

                  So, the mass of the solid in kg is 1.479 kg.