.2 RADIUS (radius; r) is part of a straight line drawn from the Center to the circumference RADIUS for each line the same length (circle will have a radius of countless many.)In the circle will have a radius of countless many.)
0.2 radius (radius; r) is part of a line drawn from the center to the periphery. Each radial lines of equal length (A circle with a radius of innumerable) in a circle with a radius of countless).