Is cup good to measure a medium size milk carton?

No, a cup is not a good way to measure a medium-size milk carton. Here's why:

* Milk cartons come in various sizes: A "medium" milk carton can vary significantly in volume.

* Cups are not standardized: There are different sizes of cups (teacups, measuring cups, etc.), making it unreliable for accurate measurement.

* Milk cartons have irregular shapes: The shape of a milk carton is not a standard cylinder, making it difficult to estimate volume accurately using a cup.

Better ways to measure a milk carton:

* Use the volume printed on the carton: Most milk cartons will list their volume in liters, quarts, or ounces.

* Use a measuring jug or a scale: These tools provide more accurate and consistent measurements.

Overall, it's best to avoid using a cup to measure a milk carton. Stick to the volume information on the carton or use a more accurate measuring device.