# Rainwater

The garden area of 800 square meters fell 3mm of rainwater. How many 10 liters of water can we water this garden equally?

Correct result:

n =  240

#### Solution:

$S=800 \ \text{m}^2 \ \\ h=3 \ mm \rightarrow m=3 / 1000 \ m=0.003 \ m \ \\ \ \\ V=S \cdot \ h=800 \cdot \ 0.003=\dfrac{ 12 }{ 5 }=2.4 \ \text{m}^3 \ \\ V_{1}=V \rightarrow l=V \cdot \ 1000 \ l=2.4 \cdot \ 1000 \ l=2400 \ l \ \\ V_{2}=10 \ \text{l} \ \\ \ \\ n=V_{1}/V_{2}=2400/10=240$

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