Answer:
Step-by-step explanation:
Given
velocity 
Area of cross-section 
velocity after Falling 0.19 m






conserving Flow



Answer:
22.5
Step-by-step explanation:
Hey there! first, we find 25% of 30 which equals 7.5 then we subtract 30 - 7.5 which is 22.5
DC= 4
BD= 10
Hope it’s right
Best luck with your studying