The radius can be used to calculate a circle's diameter, area and circumference. Likewise, ... you can construct a formula in Microsoft Excel to do the math for you. Open Microsoft Excel.

This formula makes it possible to determine pi as precisely as you like in a very simple way. You don’t have to be a master of mathematics to work out the equation. But you do need patience.

THE usual text-book formula for the radial distance of the centroid of a circular arc of radius r and length 2ra, may be converted into a useful result by expressing the position of the centroid ...