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How to Calculate the Area of a Circle: 20ft Diameter Example

Learn how to find the area of a circle with a diameter of 20ft easily with our step-by-step guide.

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Video transcript

To calculate the area of a circle, use the formula Area = π * (radius^2). For a circle with a 20ft diameter, the radius is 10ft. Therefore, the area is approximately π (10ft 10ft) = 314.16 square feet.

Questions and answers

  1. What is the formula for calculating the area of a circle?

    The formula is Area = π * (radius^2).

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

    To find the radius, divide the diameter by 2.

  3. Why is the area of a circle important?

    Understanding the area is crucial in various fields such as engineering, architecture, and nature-related studies.

  4. What is the area of a circle with a radius of 10 feet?

    The area would be approximately 314.16 square feet, calculated using the formula Area = π * (10^2).

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