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How to Calculate the Area of a Circle: 12-Inch Diameter Example

Learn how to find the area of a circle with a 12-inch diameter using a simple formula.

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Video transcript

The area of a 12-inch diameter circle is 113.1 square inches. You can calculate this using the formula: Area = π (radius)^2. Since the diameter is 12 inches, the radius is 6 inches. So, Area = 3.14159 (6^2) = 113.1 square inches.

Questions and answers

  1. What is the formula to calculate the area of a circle?

    The formula to calculate the area of a circle is Area = π (radius)^2.

  2. How do you find the radius of a circle from its diameter?

    To find the radius, divide the diameter by 2.

  3. Why is π significant in circle calculations?

    π is a mathematical constant representing the ratio of a circle's circumference to its diameter, crucial for calculations involving circles.

  4. What is the area of a circle with a 10-inch diameter?

    The area of a circle with a 10-inch diameter is approximately 78.5 square inches.

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For more math tutorials and tips on geometry, check out our videos on calculating areas of different shapes.