Step 1. Calculate the volume of gasoline tank (V) using the known mass (m) and density of gasoline (D). D = m/V ⇒ V = m/D D = 719.7 kg/m³ m = 45.0 kg V = 45.0 kg/719.7 kg/m³ = 0.0625 m³
Step 2. Calculate the depth of the tank (d) using the known volume (V) of gasoline and width (w) and length (l) of the tank: V = d * w * l 0.0625 = d * 0.900 * 0.450 0.0625 = d * 0.405 d = 0.0625 / 0.405 d = 0.154 m