Answer:
speed of water flow in the test is 27 m/s
Step-by-step explanation:
given data
cross section radius r1 = 1.8 m
radius constricts r2 = 0.60 m
speed of water flow = 3.0 m/s
to find out
speed of water flow in the test section
solution
we using the continuity equation here
A1 × V1 = A2 × V2 ...............1
put here value we get speed

1.8²×3 = 0.6² × v2
v2 = 27 m/s
speed of water flow in the test is 27 m/s