Answer:
0.2579 m³
Step-by-step explanation:
The given unit, firkin has a relation with the gallons as:
1 firkin = 9 gallons
The relation bewteen gallons and m³ is shown below as:
![1\ gallon=\frac {1}{264.172 }\ m^3](https://img.qammunity.org/2020/formulas/social-studies/high-school/ip2d5yj7bpp5ohzcnfnlwykpvpf1knwf69.png)
So,
![1\ firkin =\frac {9}{264.172 }\ m^3](https://img.qammunity.org/2020/formulas/social-studies/high-school/wdhxhultnn2t5gnsupkp39dkvw7jgbttfq.png)
To find how many m³ in 7.57 firkins.
So,
![7.57\ firkins =\frac {9}{264.172 }* 7.57\ m^3](https://img.qammunity.org/2020/formulas/social-studies/high-school/b7iskr99m8789r6xkyjwzc43ivh2ced8j5.png)
So, 7.57 firkins = 0.2579 m³