Final answer:
The volume of milk in the glass is 1571 ml.
Step-by-step explanation:
To find the volume of the cylindrical glass, we can use the formula V = πr²h, where r is the radius and h is the height. In this case, the radius is 5 cm and the height is 20 cm. Plugging in these values, we get V = 3.142 * (5 cm)² * 20 cm = 1571 cm³. Since 1 cm³ is equal to 1 ml, the volume of milk in the glass is 1571 ml.