Question

what is the volume of a pencil with a density of 20 g/cm³ and a mass of 40 g?

Explanation:

Step1: Recall the density formula

Density formula is \(
ho=\frac{m}{V}\), where \(
ho\) is density, \(m\) is mass and \(V\) is volume. We need to find \(V\), so we can rewrite the formula as \(V = \frac{m}{
ho}\).

Step2: Substitute the given values

Given \(m = 40\space g\) and \(
ho=20\space g/cm^{3}\). Substitute into \(V=\frac{m}{
ho}\), we get \(V=\frac{40}{20}\).

Step3: Calculate the value

\(V = 2\space cm^{3}\)

Answer:

\(2\space cm^{3}\)