The water for a factory is stored in a hemispherical tank whose internal diameter is 14 m. The tank contains 50 kL of water. Water is pumped into the tank to fill to its capacity. Calculate the volume of water pumped into the tank.
Given: Internal diameter of hemispherical tank = 14 m
Tank contains 50kl = 50m3 of water (since, 1kl = 1m3)
Where 
r = radius of hemispherical tank
Thus, 
Volume of water pumped into the tank = Volume of hemispherical
tank – 50m3
Volume of water pumped into the tank = 718.66 – 50 = 668.66 m3
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