Two equal circles of radius r intersect such that each passes through the centre of the other. The length of the common chord of the circle is(a) r(b) 2r AB(c) 3r(d) 32

Two equal circles of radius r intersect such that each passes through

1.	Two equal circles of radius r intersect such that each passes through the centre of the other. The length of the common chord of the circle is(a) r(b) 2r AB(c) 3r(d) 32
Answer» Two equal circles of radius r intersect such that each passes through the centre of the other. The length of the common chord of the circle is (a) $\sqrt{r}$ (b) $\sqrt{2} r A B$ (c) $\sqrt{3} r$ (d) $\frac{\sqrt{3}}{2}$