Radii Of The Circle Meaning. This means that the sector is. Radius of a circle definition.
All the diameters of the same circle have the same length. The center is a fixed point in the middle of the circle; Given the radius of a circle, the circumference can be calculated using the formula.
I used the mean earth radius provided by wikipedia, though you could use the wgs84 specification for the major and minor axes of earth (or any other datum) and take the average of the two for a fairly close earth creating circles from andrew's answer, one with 1000km and other with 3500km radius.
Meaning and quality of a good precis. Its center (or middle) and its radius (the distance from with the measure of the radius, you can tell a lot about the circle: Here the greek letter π represents the constant ratio of the circumference of any circle to its diameter, approximately equal to 3.14159. Okay, the radius of a circle is half of the diameterand the circumference is pi( π = 3,1415.) times the diameter.