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1 dzień temu · The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways — no matter if you're looking for an area-to-radius calculator or a radius to the area one, you've found the right place
- Semicircle Area Calculator
With this semicircle area calculator, you can quickly find...
- Central Angle Calculator
In this model, the Sun is at the center of the circle, and...
- Segment Area Calculator
In our example, we want to find the area of the...
- Circumference to Diameter Calculator
Diameter and circumference are lengths related to each other...
- Circle Formula Calculator
Suppose you have a circle of radius 3 cm. If you want to...
- Arc Length Calculator
Let's say it is equal to 45 degrees, or π/4. Calculate the...
- Surface Area Calculator
Our surface area calculator can find the surface area of...
- Sphere Volume Calculator
Enter the radius of the sphere. For size 5 soccer ball...
- Semicircle Area Calculator
Area of a Circle Calculator. Use this calculator to easily calculate the area of a circle, given its radius in any metric: mm, cm, meters, km, inches, feet, yards, miles, etc.
How to Calculate the Area. The area of a circle is: π ( Pi) times the Radius squared: A = π r2. or, when you know the Diameter: A = (π/4) × D2. or, when you know the Circumference: A = C2 / 4π. Example: What is the area of a circle with radius of 3 m ? Radius = r = 3. Area = π r2. = π × 32. = 3.14159... × (3 × 3) = 28.27 m2 (to 2 decimal places)
Calculate the area of a circle given the radius, diameter, or circumference. Plus learn the formulas and steps to find a circle's area.
The area of a circle with radius [latex]\large{r}[/latex] is calculated by multiplying the constant [latex]\color{blue}\large\pi [/latex] to the square of the radius, [latex]\large{{\color{red}r}^2}[/latex]. By the way, the irrational number [latex]\large\pi [/latex] is the ratio of the circumference of a circle to its diameter which is ...
6 dni temu · To find this, enter the value of the square's side or area. The calculator will display the radius of the circle with the same area as the square! You can thus use this square-in-a-circle calculator in several different ways, depending on your need!
6 dni temu · c = 2πr. A = πr² = πd²/4. where: c stands for circumference; r for radius; and. d for the diameter of the circle. π is a constant approximately equal to 3.14159265359 and, among other things, represents the circumference-to-diameter ratio of any circle. How to find the circumference and area of a circle.
