Find the average velocity of a projectile between the instants it crosses half the maximum height. It is projected with a speed u at an angle θ with the horizontal.

Sir plz provide the complete steps with diagram.

Average velocity = change in displacement/change in time
Find out
average velocity along y = Vy = y/t
find y using equations of motion
similarly Vx = x/t
t is time after which it crosses half the maximum.
now
average velocity = root ( Vx² + Vy²).