Circle Calculator
Worked example result
| Diameter | 10.0000 |
| Circumference | 31.4159 |
| Area | 78.5398 |
A radius of 5 gives a diameter of 10, a circumference of about 31.42 and an area of about 78.54 square units.
Diameter = 2r; Circumference = 2πr; Area = πr² · Powered by CalcHub — Circle Calculator