1 What is the surface area of a circular spa with a 12 foor diameter?
What is the volume of a circular spa with a 12 foot diameter and a constant depth of
2
3 feet? 19.8
3
6.
What is the surface area of a rectangular pool with a length of 10 meters and a width
of 25 feet? 76.2
What is the volume of a rectangular pool with a length of 32 feet, a width of 25 feet
and a depth ranging from 3 feet in the shallow end to 6 feet in the deep end?
5 What is the surface area of a rectangular pool with a length of 10 yards and a width
of 30 feet? 200
What is the volume of a rectangular pool with a length of 60 feet, a width of 30 feet,
and a depth ranging from 3 feet in the shallow end to 7 feet in the deep end?
7 Calculate the Saturation Index for water that has a total alkalinity of 120 ppm, a pH
of 7.6, a calcium hardness of 400 ppm, a temperature of 104°F, and a total dissolved
solids of 880 ppm. If it is not balanced, fix it.
8 Calculate the Saturation Index for water that has a total alkalinity of 50 ppm, a pH of
7.0, a calcium hardness of 120 ppm, a temperature of 82°F, and a total dissolved
solids of 400 ppm. If it is not balanced, fix it
9. Calculate the Saturation Index for water that has a total alkalinity of 30 ppm, a pH of
7.0, a calcium hardness of 100 ppm, a temperature of 104°F, and a total dissolved
solids of 600 ppm. If it is not balanced, fix it.
10. Adjust the ALKALINITY from 40 ppm to 100 ppm in a 2,500 gallon spa.
11. Neutralize the FREE CHLORINE from 7 ppm to 3 ppm in a 20,000 gallon pool. Use
Sodium Thiosulfate
12. Adjust the CALCIUM HARDNESS from 120 ppm to 200 ppm in a 60,000 gallon
pool. Use Calcium Chloride 77%.
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