Radius is the distance from the center of the circle to the edge. To calculate the radius you can do it from a known diameter divided by two or divide the area by pie.
The radius is the distance from the center of a circle to its edge and is a necessary measure in calculating other dimensions. For example, the area of a circle is the radius squared times the value of Pi (3.1416), and the volume of a sphere is... More »
Difficulty: Moderately Easy
Source: www.ehow.com
Q&A Related to "How to Calculate Radius?"
 1. Calculate the radius from a known diameter by dividing the diameter in half. For example, a diameter of 20 divided by 2 produces a radius of 10. 2. Calculate the radius from a http://www.ehow.com/how_5133408_calculate-radius.h...
 1. Measure without any other measurement. Draw a square around the circle. All sides of the square must touch the circle (be tangential) Measure the length of any 1 side of the square http://www.wikihow.com/Calculate-the-Radius-of-a-C...
 See the book. The Effects of Nuclear Weapons. for equations. My copy came with a circular slide rule that calculates that for optimal altitude airburst and surface burst over a yield http://wiki.answers.com/Q/How_is_a_blast_radius_ca...
 Use the formula to find the radius of a body from its gravitational http://www.chacha.com/question/how-to-calculate-th...
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