Please answer Question 3 and Question 4. Thank you.

3. If the settling velocity of a particle is 0.60 cm/s and the overflow rate of a horizontal flow clarifier is 2.02 cm/s, what percent of the particles are retained in the clarifier? (Round your answer to one decimal place.)

4. If a 0.9-m3/s flow water treatment plant uses 9 sedimentation basins with an overflow rate of 58.57 m3/d m2, what should be the surface area (m2) of each tank? (Round your answer to 1 decimal place.)

If the settling velocity of a particle is 0.60cm/s and the overflow rate of a horizontal flow clarifier is 2.02 cm/s, what percent of the particles are retained in the clarifier? (Round your answer to one decimal place.) If a 0.9m3/s flow water treatment plant uses 9 sedimentation basins with an overflow rate of 58.57 m3/dm2, what should be the surface area (m2) of each tank? (Round your answer to 1 decimal place.)