A circle has a diameter of 8 inches. Using pi = 3.14, what is the approximate area?

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Prepare for the Local 483 Apprenticeship Exam. Utilize flashcards and multiple-choice questions, with hints and explanations for each. Get exam-ready today!

Multiple Choice

A circle has a diameter of 8 inches. Using pi = 3.14, what is the approximate area?

Explanation:
Area of a circle is found with A = πr^2. Since the diameter is 8 inches, the radius is half of that, 4 inches. Plugging in π ≈ 3.14 gives A ≈ 3.14 × (4)^2 = 3.14 × 16 = 50.24 square inches. Rounding to one decimal place yields 50.2 square inches, which is the approximate area. The other numbers come from either rounding differently or using an incorrect radius or π value.

Area of a circle is found with A = πr^2. Since the diameter is 8 inches, the radius is half of that, 4 inches. Plugging in π ≈ 3.14 gives A ≈ 3.14 × (4)^2 = 3.14 × 16 = 50.24 square inches. Rounding to one decimal place yields 50.2 square inches, which is the approximate area. The other numbers come from either rounding differently or using an incorrect radius or π value.

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