Definite volume refers to something which has a consistent, unchanging volume, which in practical terms may mean a static mass and density, or a predetermined shape, either of which will dictate volume. A cube with side length l has a definite volume because it can only be exactly one size.
One cup of raw plantains or one medium sized raw plantain contains: ~180-200 calories, 0.5 g total fat, 47-50 g carbohydrates, 3.5 g dietary fiber, 22 g sugar and 2 g protein. Because of it's high carbohydrate content, you need to monitor your portion, otherwise your blood sugars will spike.
There are three main types of carbohydrates, which are sugars, starches and fibre. Carbohydrates contain about 4 calories per gram. The main function of carbohydrates is to provide your body with fuel and energy that is required to carry out daily activities and exercise. When carbohydrates are in our body, they are being broken down and used as energy.