Question

3. The density of salt is 80 pounds per cubic foot (lb/ft³). What is the approximate density of salt in kilograms per cubic meter (kg/m³)? *2 points

Answer 1

We know that

• 1lb = 0.4536 kg.

,

• 1ft^3 = 0.0283 m^3.

Now, we can write an expression that helps to make the unit's transformation.

Observe that the same magnitudes we write them down in opposite positions, that way, they will be simplified. Let's solve

`\begin{gathered} x=(36.288)/(0.0283)kg/m^3 \\ x\approx1,282.26kg/m^3 \end{gathered}`

Therefore, the approximate density of the salt in kilograms per cubic meter is 1,282.26.