Question

How many gallons of water will it take if the pool is 50m by 25m by 1.5m? (1 gallon = 3.789 L) How do you know?

Answer 1

check the picture below.

now, there are 1000 liters in 1m³, so in 1875 m³, there are 1875*1000 liters, or 1,875,000 liters, now, how many gallons is that?


`\bf \begin{array}{ccll} gallons&liters\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 1&3.789\\ g&1875000 \end{array}\implies \cfrac{1}{g}=\cfrac{3.789}{1875000}\implies \cfrac{1875000}{3.789}=g`