The equations of four circles are . The radius of a circle touching all the four circles is |
|||||||

a) |
b) |
c) |
d) |

The equations of four circles are . The radius of a circle touching all the four circles is |
|||||||

a) |
b) |
c) |
d) |

1 Answer

127 votes

**(c)**

The four circles are as shown in the fig

The smallest circle touching all of them has the radius and the greatest circle touching all of them has the radius

127 votes

127