To find out how many milliliters are in 3 pints, we can start by converting pints to quarts, and then convert quarts to milliliters.
1 pint = 0.5 quarts (since 1 quart = 2 pints)
So, 3 pints = 3 × 0.5 quarts = 1.5 quarts.
Now, we can convert quarts to milliliters:
1 quart = 946.35 milliliters
So, 1.5 quarts = 1.5 × 946.35 mL = 1419.525 mL.
Rounding to the nearest tenth, we get:
1419.5 mL.
The correct answer is 1419.5 mL.