Answer:
a. volume = 2/3×a³
b. velocity/speed of flow = 0.00127 m/s Â
Step-by-step explanation:
a.) The volume of a sphere is given by 4/3πr³ where r = radius of the sphere.
The volume of the hemisphere is half the volume of the sphere = 1/2×4/3×πr³
                                                     = 2/3πr³
With a as the radius, the volume will be
v = 2/3πa³
b.) Â data:
 r = 5 m
 volume flow = 0.2 m³/s
height  = 4 m
Velocity is calculated by the formula:
Volume flow = area × velocity
 0.2  =  2πr² × velocity
0.2/2Ï€ (5)² = 0.00127 m/s  Ans       Â
