To convert fluid ounces to cubic inches, we can use the conversion factor that 1 fluid ounce is approximately equal to 1.80469 cubic inches.
To find how many cubic inches are in 12 fluid ounces, we multiply:
12 fluid ounces × 1.80469 cubic inches/fluid ounce = 21.65628 cubic inches
Rounding this value to the nearest 10th of a cubic inch gives us:
21.7 cubic inches
So, 12 fluid ounces of juice fills about 21.7 cubic inches.