Calculate the Area of a Circle with an 8 cm Diameter

Learn how to find the area of a circle with an 8 cm diameter using the formula Area = π * (radius)^2.

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To find the area of a circle with an 8 cm diameter, use the formula: Area = π * (radius)^2. The radius is half of the diameter, so it's 4 cm. Therefore, the area is π * (4 cm)^2 = 16π cm² or approximately 50.27 cm².

FAQs & Answers

  1. How do you calculate the area of a circle? To calculate the area of a circle, use the formula Area = π * (radius)^2. The radius is half the diameter of the circle.
  2. What is the formula for the diameter of a circle? The formula for the diameter of a circle is Diameter = 2 * (radius).
  3. What is the area of a circle with a diameter of 10 cm? For a circle with a 10 cm diameter, the radius is 5 cm, so the area is π * (5 cm)^2 = 25π cm², which is approximately 78.54 cm².
  4. Why is the area of a circle important? The area of a circle is important in various fields, including geometry, architecture, and engineering, as it helps in measuring surfaces and understanding spatial relationships.

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