Collect rain water

The garden water tank has a cylindrical shape with a diameter of 80 cm and a height of 12 dm. How many liters of water will fit into the tank?

Correct result:

V =  603.2 l

Solution:

D=80 cm→dm=80/10 dm=8 dm h=12 dm  r=D/2=8/2=4 dm  V=π⋅ r2⋅ h=3.1416⋅ 42⋅ 12=603.2 lD=80 \ cm \rightarrow dm=80 / 10 \ dm=8 \ dm \ \\ h=12 \ \text{dm} \ \\ \ \\ r=D/2=8/2=4 \ \text{dm} \ \\ \ \\ V=\pi \cdot \ r^2 \cdot \ h=3.1416 \cdot \ 4^2 \cdot \ 12=603.2 \ \text{l}

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