yes
Volume can indeed be expressed as a decimal. When measuring the volume of a substance or object, decimals are often used to provide a more precise measurement. For example, the volume of a liquid can be measured in liters, which can be expressed as a decimal when dealing with smaller quantities. Decimals are also commonly used in scientific measurements to accurately represent the volume of irregularly shaped objects.
No.
300 ml is a measure of volume. A decimal is a number - pure and simple - neither mass, nor volume, neither length not time. So there is no decimal that is the same as 300 ml.
no they are not always equivalent.
No.
Always
Any number, negative or positive, can be expressed as a decimal number. So a negative number can always be expressed as a negative decimal.
never
Volume = pi6210 = 1130.973 cubic inches to 3 decimal places
Volume = 4/3pi143 = 11494.04 cubic cm to 2 decimal places
Because a terminating decimal is a rational number that can also be expressed as a fraction
Always