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Area of Circle Quadrant: 22 cm Circumference.

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Calculating the Area of a Circle Quadrant with a Given Circumference

When it comes to calculating the area of a circle quadrant with a specific circumference, it's essential to understand the relationship between the circumference of a circle and its radius. The circumference of a circle is defined as the distance around the circle, while the radius is the distance from the center of the circle to any point on its circumference. The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.

If the circumference of the circle quadrant is 22 cm, we can start by using the formula for the circumference of a circle to find the radius.

Given: Circumference (C) = 22 cm
Formula: C = 2πr

Solving for r:
22 = 2πr
r = 22 / (2π)
r ≈ 3.5 cm

Now that we have determined the radius of the circle quadrant, we can proceed to calculate the area of the circle quadrant. The area of a circle quadrant is a quarter of the total area of the circle, which can be determined by using the formula for the area of a circle: A = πr².

Formula for the area of a circle quadrant:
A = (1/4) × πr²

Substitute the radius value:
A = (1/4) × π(3.5)²
A = (1/4) × π(12.25)
A ≈ 3.05 cm²

Therefore, the area of the circle quadrant with a circumference of 22 cm is approximately 3.05 square centimeters.

Understanding the Calculation Process:

To summarize the steps taken in calculating the area of a circle quadrant with the provided circumference of 22 cm:

  1. Find the radius using the formula for the circumference of a circle (C = 2πr).
  2. Substitute the circumference value to solve for the radius.
  3. Use the formula for the area of a circle quadrant (A = (1/4) × πr²).
  4. Input the radius value to determine the area of the circle quadrant.

Key Points to Note:

  • The circumference of a circle can help determine the radius, which, in turn, is crucial for calculating the area.
  • The area of a circle quadrant is a fraction of the total circle area, specifically one-fourth.
  • Utilizing the formulas for circumference and area of a circle is essential in these calculations.

Frequently Asked Questions (FAQs):

  1. What is the formula for the circumference of a circle?
    The formula for the circumference of a circle is C = 2πr, where C is the circumference and r is the radius.

  2. How is the area of a circle quadrant calculated?
    To find the area of a circle quadrant, you can use the formula: A = (1/4) × πr², where r is the radius.

  3. Why is the radius important in calculating the area of a circle quadrant?
    The radius of a circle is crucial in determining its area as it defines the distance from the center to any point on the circumference.

  4. What does π represent in circle calculations?
    π, or pi, is a mathematical constant approximately equal to 3.14159. It is commonly used in circle calculations.

  5. Is the area of a circle quadrant always one-fourth of the total circle area?
    Yes, the area of a circle quadrant is a quarter of the total area of the circle, as it represents one out of the four equal parts.

By following these steps and understanding the key concepts, you can efficiently calculate the area of a circle quadrant based on the given circumference, enabling you to solve a variety of geometric problems with ease.

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