Circle with Radius 5
A circle with radius 5 has an area of 78.54 square units and a circumference of 31.42 units.
How to use this tool
- Enter radius in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your area and the full breakdown beneath it.
With a radius of 5 units, this circle has an area of approximately 78.54 and a circumference of about 31.42 units.
Frequently asked questions
- How do you calculate circle area and circumference?
- Area = π × r², Circumference = 2 × π × r, where r is the radius and π ≈ 3.14159.