No, assuming you mean C is circumference, l is length, and w is width. A circle is round and the components are named differently. The diameter of a circle could be considered (improperly) the width and the circumference could be considered (improperly) the length
The radius is 0.795cm
C = 12.6 cm
there is no length or width of a circle. There is radius and circumference and the line that goes all the way through the center to the other side of the circle, which is twice the radius. But there is no length or width of a circle.
The width of a circle is called the diameter. The distance from the centre to the edge is called the radius and the distance around the rim is called the circumference
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
Times length times width
diameter of a circle = 2*radius or circumference/pi
This is referred to as a chord. If the chord passes through the center of the circle, it represents the diameteror width of the circle.
pi = 3.14 (approx) diameter = width of a circle pi x diameter divided by 4
3.14 (pi) multiplied by the diameter of the circle. So if the circle measures 6 inches across the entire width of the circle, that would be the number to begin with.
The circumference of a circle is the perimeter of the circle for a given diamater.