WATER DISTRIBUTION MATH EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION

WATER DISTRIBUTION MATH EXAM STUDY GUIDE 2026/2027 ACCURATE QUESTIONS WITH CORRECT DETAILED SOLUTIONS || 100% GUARANTEED PASS NEWEST VERSION 1. How many gallons of water can a 2.8 cubic foot container hold? - ANSWER 20.9 gallons 2. How many gallons of paint are required to cover the outside perimeter and the top of a cylindrical tank that is 28-feet high and whose diameter is 14.5 feet? Each gallon of paint covers 200 square feet of surface. a. 6 b. 7 c. 8 d. 9 e. not enough information to solve - ANSWER c. 8 3. What is the gauge pressure exerted at the bottom of a water tank that is 40 feet high and has a 35-foot diameter, when the tank is 70% full? a. 12.1 psig b. 92.4 psig c. 18.9 psig d. 21.1 psig e. 71.3 psig - ANSWER a. 12.1 psig 4. A fire hydrant is 94-feet below the bottom of a reservoir that has 34-feet of water in it. What is the static water pressure at the fire hydrant when the water is shutoff in the main? a. 282.1 psi b. 14.7 psi c. 55.4 psi d. 100 psi e. 128 psi - ANSWER c. 55.4 psi 5. What is the surface area in square feet of the top of a cylindrical tank that has a diameter of 75ft.? - ANSWER 4,. 6. Find the surface area of the opening of an 8 inch pipe in square feet. - ANSWER . 7. Find the volume of a pipe in cubic feet that is 18"inches in diameter and 225'ft. long. - ANSWER 397 . 8. You have to paint a cylindrical water storage tank that is 150ft. in diameter and 20ft. tall. You must put two coats of paint and include the top of the tank. If each gallon of paint will cover ., how many gallons will you need to paint the tank? - ANSWER 217gallons 9. How many cubic feet of material were removed from a trench that was 3'ft. wide, 54"inch deep and 750ft. long? - ANSWER 10,. 10. How many cubic yards of backfill material are needed to backfill a trench 36 inches wide, 6 feet deep, and 300 feet long after a 14-inch main is lald in place? - ANSWER 188 11. What is the capacity of a tank in cubic feet and gallons, if the diameter is 150'ft. and the height is 32'ft.? - ANSWER 565,. / 4,227,696 gallons 12. How many gallons are in a basin that is 20ft. tall, 45ft. wide and 150ft. long? - ANSWER 1,009,800 gallons 13. How many Acre Feet are in 3,450,700 gallons? - ANSWER 10.59 AF 14. How many Acre Feet are in 552,900 cubic feet of water? - ANSWER 12.7 AF 15. How long would it take in hours to fill a sedimentation basin measuring 50ft wide 250ft in length and 15ft deep with a pump that produces 2500 gallons per minute? - ANSWER 9 hrs, 21 mins. 16. Cubic Feet to Gallons - ANSWER 1 ft3 of water is equivalent to 7.48 gal at normal temp. 17. Gallons of water to Pounds - ANSWER 1 gal of water weighs approximately 8.34 lbs 18. Gallons to Liters - ANSWER 1 gal is equivalent to 3.785 L, or 3785ml 19. Grams to Pounds - ANSWER 1 lb is equivalent to 453.6 g 20. Million Gallons per Day to Cubic Feet per Second - ANSWER 1 mgd is equivalent to 1.55 ft3/sec 21. Million Gallons per Day to Gallons per Minute - ANSWER 1 mgd is equivalent to 694 gpm 22. Cubic Feet per Second to Gallons per Minute - ANSWER 1 ft3/sec = 448.8 gpm 23. Percent Concentration to Milligrams per Liter - ANSWER 1% is equivalent to 10,000 mg/L 24. Feet of Head to Pounds per Square Inch Pressure - ANSWER 1 psi is equivalent to a column of water stands vertically at 2.31 ft. 25. Pounds Per Square Inch Pressure to Feet of Head - ANSWER 1 ft of head is equivalent to .433 psi 26. Grains per Gallon to Milligrams per Liter - ANSWER 1gpg = 17.1 mg/L 27. Day to Hours - ANSWER 1 day = 24 hours 28. Day to Minutes - ANSWER 1 day = 1,440 minutes 29. Minute to Seconds - ANSWER 1 minute = 60 seconds 30. 1 Day to Seconds - ANSWER 1 day = 86,400 seconds 31. pounds per cubic foot - ANSWER 62.4lbs/ft3 32. gallons per cubic foot - ANSWER 7.48 gallons/ft3 33. Area of a circle - ANSWER A=πr² or .785d^(2) 34. Area of a triangle - ANSWER A=bh/2 35. Area of a trapezoid - ANSWER A=(a+b)h/2 36. Circumference of a circle - ANSWER C=πd 37. Volume of a rectangle - ANSWER V=lwh 38. Volume of a cylinder - ANSWER .785D^(2)L 39. formula for gallons in cylinder or pipe - ANSWER V=.785D^(2)L×7.48gal/cubic feet 40. Quantity formula - ANSWER Q=AV Q IS cubic quantity or feet/sec A is area of circle V is velocity or fps or feet/sec 41. Pound formula - ANSWER lb=MGD×8.34×ppm % 42. MGD - ANSWER Million gallons per day 43. Ppm - ANSWER Parts per million 44. Ppm is also? - ANSWER milligrams per liter(mg/l) 1 mg/l = 1ppm