NEIEP Mechanics Practice Exam

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Prepare for the NEIEP Mechanics Exam with multiple choice questions, hints, and detailed explanations. Ace your test and advance your career!

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What is the area of a 6-inch diameter plunger?

  1. 18.84 square inches

  2. 25.13 square inches

  3. 28.27 square inches

  4. 31.42 square inches

The correct answer is: 28.27 square inches

To determine the area of a plunger with a 6-inch diameter, you need to use the formula for the area of a circle, which is A = πr², where r is the radius. First, find the radius by halving the diameter. The radius of a 6-inch diameter is 3 inches (6 inches ÷ 2). Now, plug the radius into the area formula: A = πr² A = π(3 inches)² A = π(9 square inches) A ≈ 3.14 × 9 A ≈ 28.26 square inches. Rounding this gives approximately 28.27 square inches. Therefore, the area of a 6-inch diameter plunger is approximately 28.27 square inches, making it the correct answer.

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