Question

what is the density of the cube below if the mass is 45g? h = 1cm w = 3cm l = 5cm

Explanation:

Step1: Calculate the volume of the cube

The formula for the volume \( V \) of a rectangular cube is \( V = L\times W\times H \).
Substituting the given values \( L = 5\mathrm{cm}\), \( W = 3\mathrm{cm}\), \( H = 1\mathrm{cm}\) into the formula:
\( V=5\times3\times1 = 15\mathrm{cm}^3\)

Step2: Calculate the density

The formula for density \(
ho \) is \(
ho=\frac{m}{V}\), where \( m = 45\mathrm{g}\) (mass) and \( V = 15\mathrm{cm}^3\) (volume).
Substituting the values: \(
ho=\frac{45}{15}=3\mathrm{g/cm}^3\)

Answer:

\( 3\mathrm{g/cm}^3\)