Aquarium height

The aquarium has the shape of a prism with a trapezoidal base. The length of the basic trapezoid is 60 cm and 80 cm, and the height of the trapezoid is 70 cm. The aquarium holds 196 liters of water. How tall is the aquarium?

Final Answer:

h =  40 cm

Step-by-step explanation:

$$\begin{gathered} a=60 \\ c=80 \\ v=70 \\ V=196\cdot 10^3=196000 \\ {S}_1=(a+c)/2\cdot v=(60+80)/2\cdot 70=4900 \\ h=V/S_1=196000/4900=40\text{cm} \end{gathered}$$

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