What is the term for the distance from the center of a circle to its outer edge?

What is the term for the distance from the center of a circle to its outer edge?

• A. Diameter
• B. Radius
• C. Circumference
• D. Chord

Answer: (B)

The term for the distance from the center of a circle to its outer edge is known as the radius. This is a fundamental concept in geometry, particularly when dealing with circles. The radius is crucial for various calculations involving circles, such as determining the area and circumference. For instance, if you know the radius, you can easily calculate the area using the formula \(A = \pi r^2\) and the circumference using the formula \(C = 2\pi r\). The radius is half the length of the diameter, which spans from one edge of the circle to the opposite edge, passing through the center. Understanding the definition and properties of the radius is essential for solving problems related to circles in physics and mathematics.

The term for the distance from the center of a circle to its outer edge is known as the radius. This is a fundamental concept in geometry, particularly when dealing with circles. The radius is crucial for various calculations involving circles, such as determining the area and circumference.

For instance, if you know the radius, you can easily calculate the area using the formula (A = \pi r^2) and the circumference using the formula (C = 2\pi r). The radius is half the length of the diameter, which spans from one edge of the circle to the opposite edge, passing through the center. Understanding the definition and properties of the radius is essential for solving problems related to circles in physics and mathematics.