how many radii does a circle have, tell me the exact number of radii in a circle. Share with your friends Share 5 Prashant Chauhan answered this infinite 10 View Full Answer Coldorange Sharma answered this THEY ARE INFINITE 7 Shivani answered this a radius of a circle or sphere is any line segment from its center to its perimeter. By extension, the radius of a circle or sphere is the length of any such segment, which is half the diameter...so dat can be so many..........1 ,2 ,3 ,4 ,5............ 94018954.!!!!!we don't noe ...itz infinite!!!!! 0 Ashween Kaur answered this There are infinite radius in a circle......... 4