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Operator Master

Free exam practice for Washington wastewater treatment operators.

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Math MasteryArea And Volume
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A rectangular basin floor is 12 ft long and 8 ft wide. What is its surface area?

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Curated geometry practice values describe ideal mathematical shapes only. They are not plant dimensions, usable capacities, design criteria, or operating targets.

This Draft family uses selected mathematical facts only. It does not reproduce an official formula sheet or claim Washington exam weighting.

  • Printed page 1 of 10, Area of Circle and Area of Rectangle
  • Printed page 7 of 10, Volume of Cylinder and Rectangular Tank
  • Printed page 9 of 10, Conversion Factors: 1 cubic foot of water = 7.48 US gallons; pi = 3.14