75%
explanation: it can’t be above 100% because that would be over 40.
A. length = meter = m (base)
b. volume = cubic meter = m³ (derived)
c. mass = kilogram = kg (base)
d. temperature = kelvin = K (base)
If 3.14 is rational, why should pi also be rational ?
The answer to your question is: Because pi is not 3.14 .
