The ratio of the radius to the diameter of a circle is 1:2.
A circle's diameter is always twice its radius. Therefore, if you divide the radius by the diameter, you'll always get one-half (1/2). Expressed as a ratio, this is 1:2.
Here's a breakdown:
- Radius (r): The distance from the center of the circle to any point on its circumference.
- Diameter (d): The distance across the circle, passing through the center. The diameter is equal to twice the radius (d = 2r).
Therefore:
Radius / Diameter = r / d = r / 2r = 1/2
Example:
If a circle has a radius of 5 units, its diameter is 10 units. The ratio of radius to diameter is 5:10, which simplifies to 1:2.
