The radius of a circle is 15 cm and the length of one of its chord is 18 cm. OC 2 OA 2 - AC 2. Find the distance of the chord from the centre.
OC 2 OA 2 - AC 2.
The distance between 32 and 78 is sqrt 52 or approximately 721 units. So the distance between the circle and the point will be the difference of the distance of the point from the origin and the radius of the circle. Given that the distance between their centers is. Displaystyle Delta sigma 2arcsin frac C 2.