What is the area of a circle with radius 1.5 feet using π ≈ 3.14?

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Prepare for the CSLB Concrete C-8 License Test with flashcards and multiple choice questions. Get ready for your exam with hints and detailed explanations.

Multiple Choice

What is the area of a circle with radius 1.5 feet using π ≈ 3.14?

Explanation:
The area of a circle is found with A = πr^2. With radius 1.5 ft, r^2 = 2.25, so A = 3.14 × 2.25 = 7.065 square feet. You can break it down as 3.14 × 2 = 6.28 and 3.14 × 0.25 = 0.785, then add to get 7.065. Note that 7.065 is the area; numbers like 9.425 come from the circumference (2πr), not the area, so they don’t apply here.

The area of a circle is found with A = πr^2. With radius 1.5 ft, r^2 = 2.25, so A = 3.14 × 2.25 = 7.065 square feet. You can break it down as 3.14 × 2 = 6.28 and 3.14 × 0.25 = 0.785, then add to get 7.065. Note that 7.065 is the area; numbers like 9.425 come from the circumference (2πr), not the area, so they don’t apply here.

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