Final answer:
To convert 3.5 gallons of water to millimeters, you need to convert gallons to liters and then liters to millimeters.
Step-by-step explanation:
To find the number of millimeters equivalent to 3.5 gallons of water, we need to convert the gallons to liters first and then convert the liters to millimeters. Given that 1 gallon equals 3.785 liters, we can multiply 3.5 gallons by 3.785 liters/gallon to get the number of liters. This gives us 13.2975 liters.
Now, we know that 1 liter equals 1000 millimeters, so to convert liters to millimeters, we multiply 13.2975 liters by 1000 millimeters/liter. This results in 13,297.5 millimeters. Therefore, 3.5 gallons of water is equal to 13,297.5 millimeters.
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