How do you calculate the radius of a circle?

To find the radius, divide the circumference by 2π, or use the formula R = C / (2π).

What is the relationship between the radius and diameter?

The diameter of a circle is twice the radius, expressed as D = 2R.

π (pi) is a constant that relates the circumference of a circle to its diameter, crucial for all circle-related calculations.

Circumference is used in various fields, including engineering, architecture, and manufacturing, for circular designs and calculations.

49 views

Aug 3, 2025

The R in the circumference of a circle stands for the radius. The formula for the circumference of a circle is C = 2πR where R is the radius. To find the circumference, simply multiply the radius by 2π (approximately 6.28). For example, if the radius is 5 units, the circumference is 2π(5) = 31.4 units.

How do you calculate the radius of a circle? To find the radius, divide the circumference by 2π, or use the formula R = C / (2π).
What is the relationship between the radius and diameter? The diameter of a circle is twice the radius, expressed as D = 2R.
Why is π important in circle calculations? π (pi) is a constant that relates the circumference of a circle to its diameter, crucial for all circle-related calculations.
What are some real-life applications of circle circumference? Circumference is used in various fields, including engineering, architecture, and manufacturing, for circular designs and calculations.