2*pi*r/Arc length = 360/Degree
since both are a ratio of the whole circle to the arc.
Simplifying,
r = 360*Arc Length/(2*pi*Degree) = 180*Arc Length/(pi*Degree)
Length = angle˚/360˚ x 2∏r
The longest chord in a circle is its diameter and halve of this is its radius.
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
If the radius is 8cm and the central angle is 70, how do yu workout the chord lenght?
That will depend on the length of the radius which has not been given but in general the circumference of a circle = 2*pi*radius or diameter*pi
Length = angle˚/360˚ x 2∏r
radius of curvature = 2Focal length
If you are given a chord length of a circle, unless you are given more information about the chord, you can not determine what the radius of the circle will be. This is because the chord length in a circle can vary from a length of (essentially) 0, up to a length of double the radius (the diameter). The best you can say about the radius if given the chord length, is that the length of the radius is at least as long has half half the chord length.
(arc length / (radius * 2 * pi)) * 360 = angle
The longest chord in a circle is its diameter and halve of this is its radius.
you will need to know the angle subtended by the arc; arc length = radius x angle in radians
With the information given, you cannot. You need the radius or the central angle.
Circumference x (degree/360)
If you mean the diameter and radius of a circle given the circumference it is:- diameter = circumference/pi radius = circumference/(2*pi)
-- Circumference of the circle = (pi) x (radius) -- length of the intercepted arc/circumference = degree measure of the central angle/360 degrees
If the radius is 8cm and the central angle is 70, how do yu workout the chord lenght?
That will depend on the length of the radius which has not been given but in general the circumference of a circle = 2*pi*radius or diameter*pi