Rectangle 3148

The garden tank is filled to the brim with water. The bottom of the tank is a rectangle with sides of 150 cm and 160 cm, and the height of the tank is 0.8 m. How many 15 l cans can we use to empty the garden tank?

Correct answer:

n =  128

Step-by-step explanation:

$$\begin{gathered} a=150\text{cm}\to \text{dm}=150:10\text{dm}=15\text{dm} \\ b=160\text{cm}\to \text{dm}=160:10\text{dm}=16\text{dm} \\ c=0.8\text{m}\to \text{dm}=0.8\cdot 10\text{dm}=8\text{dm} \\ V=a\cdot b\cdot c=15\cdot 16\cdot 8=1920{\text{dm}}^3 \\ {V}_1=15\text{l}\to {\text{dm}}^3=15\cdot 1{\text{dm}}^3=15{\text{dm}}^3 \\ n=V/V_1=1920/15=128 \end{gathered}$$

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