Circle Area Calculator
The Circle Area Calculator is a free online tool that allows users to instantly calculate the area and circumference of a circle, given its radius or diameter. With its simple and intuitive interface, this calculator is perfect for students, teachers, engineers, and anyone who needs to work with circles. By using this tool, you can save time and effort in calculating circle areas and circumferences, and get accurate results in a matter of seconds. Whether you're working on a math problem, designing a circular shape, or simply curious about the properties of circles, the Circle Area Calculator is the perfect tool for you.
How it Works
The Circle Area Calculator uses a simple formula to calculate the area and circumference of a circle. The formula for the area of a circle is: Area = π * r^2, where r is the radius of the circle. The formula for the circumference of a circle is: Circumference = 2 * π * r. By entering the radius or diameter of the circle, the calculator can calculate the area and circumference using these formulas.
| Radius (r) | Area | Circumference |
|---|---|---|
| 1 | 3.14 | 6.28 |
| 2 | 12.56 | 12.56 |
| 3 | 28.26 | 18.84 |
| 4 | 50.24 | 25.12 |
| 5 | 78.54 | 31.4 |
Common Use Cases
- Calculating the area of a circular garden or pool
- Determining the circumference of a circular pipe or tube
- Finding the area of a circular shape in a design or architecture project
- Calculating the volume of a cylinder or cone
- Solving math problems involving circles and circular shapes
- Designing circular patterns or shapes for art or craft projects
- Calculating the area of a circular roof or dome
- Determining the circumference of a circular wheel or gear
- Finding the area of a circular shape in a geographic information system (GIS)
- Calculating the area of a circular shape in a computer-aided design (CAD) project