Circle Calculadoa

Calculate radius, diameter, circumference y area of a circle. Enter any value a find the others con π precision.

3.1415926535…
Radius (r)
5
Diameter (d)
10
Circumference (C)
31.4159
Area (A)
78.5398
Formulas
d = 2r
C = 2πr
A = πr²