The coordinates of the centre of the circle, $O$ and a point on the circle, $N$, are shown in the fi

Question

The coordinates of the centre of the circle, $O$ and a point on the circle, $N$, are shown in the figure below.\ What is the radius of the circle?\

Professor PC Thomas Classes · Answer

(b) : Radius of the circle $=\sqrt{(-2.4-(-4))^{2}+(1.8-3)^{2}}$ \