Question

What is radius? Help me out.

Answer 1

Radius is half the diamiter of a circle, basically the whole length from one point of the circle to the middle.

Answer 2

Radius is how far the middle of the circle is from the edge of the circle. For example, we know that a circle has a middle point and we know that we have a line around it in the shape of a circle. The radius would be the distance from the middle point to the outer line of the circle.