To determine the meaning of each part of a circle, here are the definitions and relationships among the components you mentioned:
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Area: The amount of space inside the circle. It is calculated using the formula \( A = \pi r^2 \), where \( A \) is the area and \( r \) is the radius.
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Circumference: The distance around the circle. It is calculated using the formula \( C = 2\pi r \) or \( C = \pi d \), where \( C \) is the circumference, \( r \) is the radius, and \( d \) is the diameter.
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Diameter: The length of a straight line that passes through the center of the circle and connects two points on the circumference. The diameter is twice the radius, expressed as \( d = 2r \).
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π (Pi): A mathematical constant approximately equal to 3.14159. It represents the ratio of the circumference of a circle to its diameter.
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Radius: The distance from the center of the circle to any point on its circumference. The radius is half of the diameter, expressed as \( r = \frac{d}{2} \).
You can input these definitions into the appropriate areas where needed.