It is the distance, from any point on a curve, to the centre of curvature at that point.
One radius
Twice the radius.
It refers to the radius of a circle which is half of its diameter.
radius is half of a circle. when u make a line from the middle of the circle to the edge would be the radius:]
RADIUS
Radius
When you draw a circle in math, and you draw a triangle inside of it, 2 of the lines should be the radius of the circle, and the third (bottom) line that is not the radius is the chord.
The radius-tangent theorem is math involving a circle. The radius-tangent theorem states that a line is tangent to a circle if it is perpendicular to the radius of a circle.
The distance from the center of a circle to its perimeter
radius times two
you do math
My math teacher said pir2 in other words pi x radius to the second power.