Question 7018 of 229 · California Water Distribution Operator Exam
What is the cross-sectional area of an 18-inch pipe, in square feet?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 7018
- A: 1.77 sq ft
Explanation
Area = 0.785 x D^2 = 0.785 x 1.5 x 1.5 = 1.77 sq ft. Use the diameter in feet, not inches.
More questions: Distribution Math
- 7019A 12-inch valve is closed against 60 psi. What is the total force on the valve face?
- 7020A 50,000 gallon tank is filled at 250 gpm. How long will it take to fill an empty tank?
- 7021A meter reads 482,500 gallons on May 1 and 497,200 gallons on May 15. What is the average daily use over those 14 days?
- 7022What is the velocity in a 12-inch pipe that carries 1.0 MGD? (1 MGD = 1.55 cfs)
- 7023What is the capacity of an 8-inch pipe flowing at 4 feet per second, in gallons per minute?
- 7024A cylindrical tank is 40 feet in diameter and 25 feet high. What is the area of the interior side wall to be sprayed with disinfectant?