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

Learn how to find the area of a circle with a 20 diameter using the formula for area calculation.

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The area of a circle with a 20 diameter can be calculated using the formula Area = π(r²). With a radius of 10 (half of the diameter), the area is π * 10², which equals approximately 314.16 square units.

FAQs & Answers

  1. What is the formula for the area of a circle? The formula for the area of a circle is Area = π(r²), where r is the radius.
  2. How do you convert diameter to radius? To convert diameter to radius, divide the diameter by 2.
  3. What does π (Pi) equal? π (Pi) is approximately equal to 3.14 and is the ratio of the circumference of a circle to its diameter.
  4. Can I calculate area with only the diameter? Yes, you can use the diameter to find the radius and then use the area formula.

Watch More

For further understanding of geometry, check out our videos on circle properties and area calculations of different shapes.

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