The radius of a circle is the distance from the center to any point on its circumference. The diameter is twice the length of the radius. The circumference of a circle is the distance around its outer edge, and the area is the space inside the circle.
The radius of a circle is the distance from the center of the circle to any point on its circumference.
The diameter is the distance across the circle passing through the center, and it is equal to twice the length of the radius.
So, if the radius of a circle is 'r', then its diameter would be '2r'.
The circumference of a circle is the distance around its outer edge. It can be calculated using the formula 'C = 2πr', where 'π' is approximately 3.14159.
So, if the radius of a circle is 'r', then its circumference would be '2πr'.
The area of a circle is the amount of space inside the circle. It can be calculated using the formula 'A = πr²', where 'π' is approximately 3.14159.
So, if the radius of a circle is 'r', then its area would be 'πr²'.