How to find radius?
Given what?
The radius of a circle is simply half the diameter. So, you'd just divide the diameter by 2. If not given the diameter, you'd take the formula given and evaluate it for "r".
To find the radius of a circle or sphere, you need to know either the diameter or the circumference (for a circle) or the diameter or the volume (for a sphere). Here are the steps to find the radius:
1. If you know the diameter (the straight line segment passing through the center of the circle or sphere and connecting two points on its circumference), you can simply divide it by 2 to find the radius. The formula for this is:
radius = diameter / 2
2. If you know the circumference (the distance around the circle or sphere), you can use the following formulas to find the radius:
For a circle: radius = circumference / (2 * π), where π is approximately 3.14159
For a sphere: radius = (3 * volume / (4 * π))^(1/3), where volume is the total space enclosed by the sphere
Remember to use the appropriate measurements (e.g., meters, inches, etc.) for both the diameter and the resulting radius.