Question

Why is rainfall measured in mm/cm and not in ml/litre as it is liquid?​

Answer 1

Answer:

Cuz you are measuring the size of the raindrop length and not the quanting Cuz it already measured before so

Explanation:

This is what I believe

Answer 2

Answer:

Explanation:

There is a logical answer but in short, we use units of length only because it is adopted as an international standard, and converting it to volume to decide the amount of rain over an area is a lot easier. It works like this..

Rainfall amount is described as the depth of water reaching the ground, typically in inches or millimeters (25 mm equals one inch). An inch of rain is exactly that, water that is one inch deep. One inch of rainfall equals 4.7 gallons of water per square yard or 22,650 gallons of water per acre.

Coming to the logical part, it is a lot more practical to use units of length to measure rainfall because the instrument used to measure rainfall falling over a particular location is a rain gauge. It is calibrated to linear units of measurement like mm and inches rather than the standard cubic unit of measurement and this makes it a lot practical, as Cubic units depend on other factors such as the terrain of the land taken into consideration (Surface area) and more.

Hope this helps!