Answer:
A 93%
Step-by-step explanation:
= Pressure will be equal at inlet and outlet
= Density of water = 1000 kg/m³
g = Acceleration due to gravity = 9.81 m/s²
= Velocity at inlet = 1.2 m/s
= Velocity at outlet
= Radius of inlet =

= Radius of outlet
From Bernoulli's relation

From continuity equation

The fraction would be

The fraction is 93.0304%