Question 7024 of 229 · California Water Distribution Operator Exam
A 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?
Exactly one answer is correct.
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Correct answer to question 7024
- C: 3,140 sq ft
Explanation
The side wall is a rectangle: circumference x height = 3.14 x 40 x 25 = 3,140 sq ft. 0.785 x D^2 is the floor area formula, not the wall.
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