There is no direct relation between the area of a sector and the length of an arc. You must know the radius (or diameter) or the angle of the sector at the centre.
The diameter of a circle if twice the length of the radius.
The relationship between the chord and the radius of the circle is Length of the chord = 2r sin(c/2) where r = radius of the circle and c = angle subtended at the center by the chord
Length of a radius is always half the diameter of a circle. This means that the circle has a radius of 2cm.
The length of the space between two sides of a circle passing through the radius, Alternatively it is twice the length of the radius. This is the distance from the centre of the circle to any point on the circumference.
There is no direct relation between the area of a sector and the length of an arc. You must know the radius (or diameter) or the angle of the sector at the centre.
The diameter of any circle is twice its radius
The radius is half the diameter.
In relation to the area of a circle: pi*radius^2
The diameter of a circle if twice the length of the radius.
By definition Pi is the relation between the radius and circumference of a circle.
The length of the radius.
Radii is the plural of radius. A radius is the length of a line segment between the center and the circumference of a circle or sphere.
The diameter of a circle is twice its radius.
The radius of a circle is the length of the line from the center of the circle to any point on its edge.
f=|-R/2|
The relationship between the chord and the radius of the circle is Length of the chord = 2r sin(c/2) where r = radius of the circle and c = angle subtended at the center by the chord