Question

why a cubit cannot be used as the standared unit of lenth 6 class physics​

Answer 1

$\huge\underline\bold\blue{Answer:-}$

• Hand span and cubit are not used as standard units of length because their sizes vary from person to person. So, two different persons may give different measurements for the same length, which is not desirable for a standard unit.

Answer 2

Answer:

Because these are not Standard Units of measurement.