Question

What is radius ??????​

Answer 1

A strɑight line from the centre to the circumference of ɑ circle or sphere.

Hope it helps you !!

Answer 2

In classical geometry, a radius of a circle or sphere is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length. The name comes from the Latin radius, meaning ray but also the spoke of a chariot wheel.