Как да изчислим Circle

Какво е Circle?

A circle is the set of all points in a plane that are exactly the same distance (the radius) from a central point. All four measurements — radius, diameter, circumference, and area — can be calculated from just one known value using the mathematical constant π (pi ≈ 3.14159).

Ръководство стъпка по стъпка

1. 1Radius (r): the distance from the centre to any point on the circle
2. 2Diameter (d): twice the radius — d = 2r
3. 3Circumference (C): the perimeter of the circle — C = 2πr = πd
4. 4Area (A): the space enclosed — A = πr²

Worked Examples