The maximum daily demand at a water purification plant has been estimated as 12 million litres per day.Find the cross-sectional area of the sedimentation tank required if a detention period of 6 hours and the velocity of flow of 0.2 m/minute is assumed.
1
51.7 m2
2
41.7 m2
3
61.7 m2
4
31.7 m2