Question

Why is volume not a fundamental dimension in the SI?

Answer 1

Its made up of other units. That unit is Length.

Answer 2

So volume isn't a fundamental dimension because Length already covers all that volume is made up of?

Answer 3

Volume is length in 3 three dimensions.

Answer 4

Oh okay, I see. Thank you!

Answer 5

So its not a fundamental unit because it can be "broken down" to its constituents which is length.