Question 9015 of 234 · California Wastewater Operator Exam
A cylindrical digester has a diameter of 40 ft and a sidewater depth of 25 ft. What is its volume in cubic feet?
Exactly one answer is correct.
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Correct answer to question 9015
- B: 31,400 ft3
Explanation
Volume = 0.785 x 40 x 40 x 25 = 31,400 ft3. Omitting 0.785 gives a square tank, and using the radius in the 0.785 formula or leaving out one diameter gives wrong results.
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