The radius can be used to calculate a circle's diameter, area and circumference. Likewise, a sphere's volume is calculated from the radius. If you already know any of these figures, you can easily ...

For all my life I have just trusted the values given to us. You know, if the ancient Greeks could calculate the radius of the Earth, why can't I? If you are not familiar with Lake Pontchartrain ...

are well within the 500-mile radius. Destinations at the very edge of the circle may be farther than your maximum distance once you calculate actual driving routes. The radius tool measures ...

To find the equation of a circle when you know the radius and centre, use the formula \({(x - a)^2} + {(y - b)^2} = {r^2}\), where \((a,b)\) represents the centre of the circle, and \(r\) is the ...

The difference in angles at the two locations along with the distance between the two locations gives enough to find the radius. Of course, we cheated a little bit. We looked up the distance ...