The excavation

The excavation for the city sewer was 38 m long, 2.2 m wide, and 3 m deep. a) How many cubic meters of soil were dredged b) How many journeys had to be made by one car when removing the soil if they loaded an average of 4.5 m of cubic soil on each journey?

Correct answer:

V =  250.8 m³
n =  56

Step-by-step explanation:

$$\begin{gathered} a=38\text{m} \\ b=2.2\text{m} \\ c=3\text{m} \\ V=a\cdot b\cdot c=38\cdot 2.2\cdot 3=250.8{\text{m}}^3 \end{gathered}$$

$$\begin{gathered} V_1=4.5{\text{m}}^3 \\ n=V/V_1=250.8/4.5=56 \end{gathered}$$

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